Because people were loosing jobs and Machines took peoples place!
<span>C) the invasion of Poland
It happened in 1939, before all of the other events.
Hope this helps :)</span>
I would personally go with letter C
<span>Benjamin Butler was one of the first officials. He felt that the runaway slaves could be considered "contraband" and, as such, did not have to be returned to their masters. He felt that the Union could keep them and use them as soldiers if they so chose.</span>
Below are the reasons why E<span>uropean traders begin to travel to Asia by sea:
1. By and large transporting will be modest on the off chance that you take the course by means o the ocean than the land.
2. before European brokers found the ocean course to Asia, they use to take the land course, which passes through the center east. What's more, when once the ocean courses were found the expenses of many imported products tumbled to 33% of its esteem</span>