Bandeirantes (Portuguese-Brazilian explorers) discover massive alluvial gold deposits in the valleys of Minas Gerais, triggering the first great gold rush of the Americas. This discovery shifts the economic focus of colonial Brazil from northeastern sugar plantations to the rugged southern interior, leading to the foundation of wealthy mining cities like Vila Rica (Ouro Preto). To support the gold extraction, over a million enslaved Africans are imported directly to the mines, fundamentally shifting the demographic and cultural makeup of Brazil. The gold rush fuels the Portuguese treasury, funding lavish Baroque architecture across Portugal.

The gold boom in Minas Gerais directly sparks the 'Arcádia Mineira', the most important literary movement in 18th-century Brazil. Poet-miners and intellectuals like Tomás Antônio Gonzaga and Cláudio Manuel da Costa form a distinct school of neoclassical poetry that contrasts the harsh reality of gold mining with an idealized, pastoral setting. Their work eventually evolves into political critique, culminating in the Inconfidência Mineira independence conspiracy of 1789, where the taxation of gold serves as a primary catalyst for rebellion.