The correct options are
B From the 16th century, sugarcane production became the base of Brazilian economy and society.
C The Portuguese settlers fought conflicts with other European powers to retain control over the teritory.
D The Napoleonic Wars in Europe reshaped the future of Brazil from being a colony to an independent nation.
A Portuguese travellor, Pedro Álvares Cabral, discovered Brazil and claimed it in the name of King Manuel I of Portugal. Brazil was a portuguese colony since 1500 till 1822 when it became independent. The portuguese settlers had to fight with the French and the Dutch to hold control over land. The Brazilian economy depended on slaves to work on large plantations. The discovery of gold in the early 18th century brought in many new settlers. The Napoleonic Wars in Europe reshaped the future of Brazil from being a colony to an independent nation.