Economists have frequently hypothesized that industrialization and its correlates played a major role in inducing fertility decline in the United States after 1850. ... This leaves changes in the cost of raising children as the likely driver of the industrialization result.
They had to actually collect people who were willing to go, collect enough supplies and Good, weather could have been bad, sickness, lots of people scared to go to a new land
The current population of Brazil is 210,904,703.