São Paulo (state)
Expansion

Among those who attempted to enslave the native were explorers of the hinterland called " bandeirantes ". From their base in São Paulo, they also combed the interior in search of natural riches. Silver, gold and diamonds were companion pursuits, as well as the exploration of unknown territories. Roman Catholic missionaries sometimes tagged along, as efforts at converting the natives aborigines (Indians) worked hand in hand with Portuguese colonialism.

Despite their atrocities, the wild and hardy bandeirantes are now equally remembered for penetrating Brazil's vast interior. Trading posts established by them became permanent settlements. Interior routes opened up. Though the bandeirantes had no loyalty to the Portuguese crown, they did claim land for the king. Thus, the borders of Brazil were pushed forward to the northwest and the Amazon region and west to the Andes Mountains.

French Emperor Napoleon's invasion of Portugal in 1807 prompted the British with their vast powerful Royal Navy to evacuate King João VI of Portugal, Portugal's prince regent, from the capital Lisbon, across the Atlantic to Rio de Janeiro and Brazil then became the first overseas colony to become the temporary headquarters of the Portuguese Empire. João VI rewarded his hosts with economic reforms that would prove crucial to São Paulo's rise. Brazil's ports—long closed to non-Portuguese ships—were opened up to international trade. Restrictions on domestic manufacturing were waived.

When Napoleon was defeated in 1815, with the end of the Napoleonic Wars, João gave political shape to his territory, which soon became the United Kingdom of Portugal, Brazil and the Algarves. Portugal and Brazil, in other words, were ostensibly co-equals. Returning to Portugal six years later, João left his son, Pedro, to rule as regent and governor.
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