to survive
The main reason is most likely relious-based bigotry.
People immigrated for various reasons such as better economic opportunities, escaping persecution or conflict, reuniting with family, or seeking better living conditions.
Make money, or earn a living.
Addiction
Since agriculture was the main way of earning a living, most people lived and worked on a farm.
People ENTER into business to make a living.
Unclean environments.
PORN!
people are lazy
fu
Agricuture
The main effect was six million less people were living.