sentences:  Transportation systems for moving wealth were developed, and cattle ranching and foodstuff production expanded after the decline of the mining industries in the second half of the 18th century.Between 1700 and 1800, 1.7 million slaves were brought to Brazil from Africa to make this sweeping growth possible.By 1819 the population of Brazil was 3.6 million, and at least one third were enslaved Africans.