Not very well, there was a huge economic crisis and they were unable to stop the depression.
It's called 'cause in fact'
Millions of people moved during the Industrial Revolution. Some simply moved from a village to a town in the hope of finding work whilst others moved from one country to another in search of a better way of life. Some had no choice, transportation was a punishment for some crimes.
They had weapons, their societies were separated, which made it easier for them to take over
