Understanding Brazil's territorial evolution through history
Oct 19, 2026
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This past Wednesday, on the 7th of September of 2022,
Brazil celebrated its 200 years of
independence. The year was 1822,
and at the time Portuguese Prince Pedro, later King Pedro IV of
Portugal, was regent of Brazil, in the name of his father,
the Portuguese king, and he declared
the independence of the country, becoming its first emperor.
This video isn't about the history
of Brazil by itself, despite how interesting it is.
You see, when Brazil got its independence in
1822, the way its territory looked was different than it is today
and when they were first colonized
by the Portuguese in the early 16th century
from whom they got their independence, it looked even
more different. What I want to do in this video
is take a look at that territorial evolution of
the country because other than the evolution being interesting
in itself, by looking at the moments
when the territory changed, either in size or organization,
we can understand specific historical
events and moments that shaped the history and future of the nation.
First, I think we should take a look at this GIF
that summarizes the entire evolution in
case you don't want to watch the entire video.
Then we'll go through all of the moments of change
and attempt to find out what happened
in the history of the country at those times.
The GIF on Wikipedia is somewhat reduced.
It shows us only the big moments of change
from 1534 to 1990 with 8 key changes in the
territory, but this is somewhat oversimplified.
I found this way better gif made by Michael Serra.
It's over two minutes long with every single detailed change
in Brazil's territory throughout
time. It allows us to have a bigger
and more detailed picture of everything that happens.
There's two types of changes,
those that increase the territory or decrease it, and those that
reorganize the administrative divisions of that territory.
Sometimes only one of them takes place,
other times both. It starts with Portuguese colonization,
where the colony was divided
into straight lines,
it changes to a better mapped organization in 1580, and then the
territory starts growing, sometimes with stepbacks,
and reorganizing itself until
reaching its current form.
One key detail that we'll look at ahead is the conquest and subsequent
loss of Cisplatina, today known as Uruguay,
who conquered its own independence. So, now that we
were able to get the overview,
let's go through the main moments of change and try to understand
what happened. Before the key moments of colonial
and then independent Brazil,
it's important to note that the territory
was already populated before the Portuguese got there,
being inhabited by various native tribes.
The way in which the territory of these tribes was
organized is largely unknown, but some records or projections do exist.
This map for instance
shows us which tribes controlled
which parts of the coast in modern Brazil.
But let's get back to the territorial evolution
of Brazil as we know it today.
The Portuguese established the first colony in 1532
and their reach on Brazilian territory,
which allowed them to build up their colony and expand it further,
had to do with an important map
from 1494, the Treaty of Tordesillas.
Pope Alexander VI had taken the insane decision
of dividing the uncolonized non-Christian world between Spain
and Portugal, granting each half
of the world to colonize.
This was in 1493, but the Portuguese limit line in South America gave
them only a small piece of land.
So, in 1494, they negotiated with Spain to extend that line further
through the Treaty of Tordesillas,
knowing that Brazil's lands were valuable and planning to
establish a great colony there.
The initial territorial expansion of Portuguese Brazil
is based and possible because of this first map.
The colonization of Brazil by the Portuguese
wasn't very successful at first,
partly due to their own incompetence, but also due to sabotage
by the French, Dutch and English who were,
understandably, against the idea of the two
Iberian powers controlling all of this land.
The colony was under direct crown authority,
but the crown itself
also failed at stopping French incursions into their territory. So,
they decided to create captaincies,
delegating the tasks of exploring, colonizing and defending
these regions. Fourteen were created in 1534,
attributed to nobles who acted as these ruling
captains. They were inherited by their heirs once they died,
so essentially it was a feudal
organization of the land.
The system didn't really work that well either, only two of them really
prospered, Pernambuco and São Vicente.
The captaincies could also be sold and that was
mostly the way through which
the Portuguese crown got them back further ahead, buying them and
taking once again direct control, but this was later on.
In 1549, the general government was
established, perhaps to provide some type of control
and monetarization by the crown over
the captaincies, and that is where our gift starts.
The territory had some small administrative
changes, but stayed pretty much the same until 1572,
when the northern government and southern
government were created, dividing the captaincies in two,
but this division was then extinct in 1577.
However, the growth of Brazil took a temporary hit,
due to the extinction of the Portuguese
Crown's dynasty and its temporary union with Spain,
being ruled by the Spanish between 1580
and 1640. During this period,
Brazil became at war with other European powers, who were allies
of Portugal, but enemies of the now ruling Spain.
The Netherlands especially attacked and invaded
various regions of northeast Brazil,
taking real control of the land and remaining in some areas
for as long as 24 years.
Recife, for instance, was temporarily the capital of New Holland,
Dutch Brazil. And on top of these consequences of Spanish rule,
the Spanish crown itself
wanted to reorganize the territory.
In 1621, they divided the colony in two once again. The two
independent administrative areas,
the state of Brazil in the south and the state of Maranhão
in the north. At this point, only nine captaincies remained,
three under royal control, and six
inherited. By 1640, Portuguese sovereignty was recovered
and Brazil went back to just being a
Portuguese colony with no further ties to the Spanish.
By this time, the expansion of the
territory had already surpassed
the lines established in the Treaty of Tordesillas,
but then again, the treaty wasn't respected anywhere else
in the world once other European
powers started colonizing.
Captaincies were no longer the many initial ones, but a smaller
number which were larger in territory.
Between 1640 and 1680, not much happened other than
internal reorganizations of how the territory was administered.
In 1680, however, a key event
took place, the Portuguese and Brazilian conquest of Sacramento,
today a city in Uruguay. From early
on, and part of the reason why they extended
the Tordesillas division line, the Portuguese had a
plan of establishing an island of Brazil colony.
Now, Brazil obviously isn't an island, but some
historians have confirmed that their plan
was to control both the Amazon River Basin and the
Rio de la Plata Basin, therefore creating somewhat
of a natural barrier for the heartland of their
colony, surrounded by water,
the Atlantic on one side and the rivers on the other. This incursion
south was perhaps still an attempt at that.
They established an outpost here near the River Basin
in 1680. The Spanish were upset at this incursion and took it back,
but eventually the Portuguese
regained it diplomatically,
then in 1705 the Spanish changed their mind and conquered it,
and control over it went back and forth between the Portuguese
and the Spanish for decades. This
Portuguese incursion into South America was perhaps
the prologue of their conquest and occupation of
what is today Uruguay. Meanwhile,
internal territorial organizations kept happening within
Brazil itself, with regions being renamed,
states created, and captaincies losing more and more
relevancy as the crown increasingly took direct control of the colony.
But some territorial
conquests and losses still took place.
Mainly focused in three regions. First, up north in the
Guianas. It's honestly fascinating to me how
the Guianas region was so equally separated among the
five main colonial powers of Europe, Spain, England,
France, the Netherlands, and Portugal. Sort of a
perfect example of how each of these colonized
and decolonized their empire. If you want, I can make
a full video about this.
Brazil, or rather Portugal's disputes in this area were mostly
with the French and the Dutch.
Perhaps as revenge for those Dutch invasions when they were ruled by
the Spanish, the Portuguese entered Dutch Guiana in 1714,
starting a local war that ended up
including France as well.
The Portuguese were vastly successful at first, but then the commander
refused to take orders from the king,
being arrested and causing the failure of the campaign
and losing the conquered territory.
Some other incursions happened in coming decades, like the
conquest of parts of French Guiana in 1800 or 1808.
They actually held Cayenne until 1817.
Another region of territorial gain
and loss for Brazil was the Amazon forest borders. Since 1652,
Brazilian borders in the Amazon were mostly established,
but some gains were made afterwards.
In 1750, for instance, the Treaty of Madrid
was signed between Portugal and Spain,
officially replacing the completely outdated
and ignored Treaty of Tordesillas. They both
admitted to breaching the treaty,
deciding that those who control land today have the right to
keep it, but also that natural borders such as mountains
and rivers should be prioritized.
Portugal seems to have been highly benefited from the treaty.
They gave back the city of Sacramento
that we just mentioned, as well as any claim
to the river de la Plata basin. In exchange,
they gained Rio Grande do Sul,
parts of Santa Catarina and Paraná, Mato Gros do Sul and various
other uninhabited regions. And finally, the south,
which like we saw, grew with the 1750 treaty. But
in 1761 the Treaty of Madrid was itself annulled due
to native resistance of Portuguese annexation
but also Portuguese desire to regain Sacramento as well.
They lost more southern lands in 1777
in another war against Spain but then regaining it
and even expanding their conquest into Cisplatina,
today the country of Uruguay, in 1821.
The territory had recently gained independence
from the Spanish Empire and called itself
the League of the Free People. The Portuguese and
Brazilian saw the chance and conquered it.
So now, here it was, the biggest colony in
the Portuguese Empire.
In 1808, the Portuguese court had fled from Napoleon's invasion of
Portugal, even establishing the new capital
in the city of Rio de Janeiro. In 1815, the king
vested Brazil with the status of kingdom,
creating the United Kingdom of Portugal, Brazil, and the
Algarves. When he had to return to Portugal due to a local issue,
he left his son and heir to the
throne, Dom Pedro, as Prince Regent.
And like I mentioned in the beginning, he declared independence
in 1822, proclaiming himself as Emperor of Brazil.
After independence, the territory of the Empire of
Brazil remained the same as the Portuguese had,
with some minor changes. By 1828, Uruguay gained
its own independence,
something that Rio Grande do Sul attempted as well in 1836, fighting a
separatist war against Brazil,
but quickly being defeated after a few years. In 1867, they signed
a tree of limits with Bolivia,
redefining the border and gaining some land in the interior.
In 1870-72, the war with Paraguay ended,
with Brazil gaining territories north of the river
Apa, today in the state of Mato Grosso do Sul.
Some more lands were gained and lost
up north in Guiana as well.
In 1889, Brazil became a republic and one of the priorities
of the new regime was to finally settle
their territorial limits with various treaties with
neighboring and European countries taking place to define them.
By 1900, the territorial extent
of Brazil had been established as it is today,
save one exception, Acre, which they acquired
from Bolivia in 1903 in return for 2 million sterling pounds
and a few territories in the
Amazon region, all of it a consequence of the War of the Acre.
The fact that it was the last
territory to join perhaps justifies the myth that it doesn't exist.
Many other internal administrative
reorganizations took place,
but from 1903 onwards they neither lost nor gained territory compared
to what they have today. By this time,
the old captaincies were nothing but a distant memory.
In 1903, the internal organization of the country was,
as far as I could understand,
already a federal system, which arrived alongside the Republic in 1889.
The territories of the
states changed throughout time, with the creation of many new ones.
Out of the bigger existing ones,
they also changed names very often.
The last big internal change was the creation of the
federal district of Brasilia in 1960
and the state of Tocantins in 1988. Today, Brazil has these
borders composed of 26 states and one federal district.
So, that is the territorial evolution
of Brazil, from those ridiculous straight lines
of the Portuguese captaincies all the way up to
the modern federal republic,
going through Portuguese colonialism, Spanish rule, Dutch
incursions, attempts at independence
and wars with their recently independent neighbors as well.
Brazil is a fantastic example of a country
that wasn't that big to begin with, but was able to
grow its territory immensely,
today being the 5th largest country in the world. Thanks so much for
watching this video. Leave a comment below
if you notice any mistakes or have any additional
information about this topic.
Subscribe if you want and I will see you next time for more
general knowledge.

