Answer: D is right. But there are also many other reasons.
Explanation: League of Nations was formed by Allied powers (from the WW I) so consequently it was viewed as "League of Victors". Moreover USA did not join, may other states did not join and later on League of Nations was unable the prevent outbreak of WW II.
The reasons people move are usually for economic, political, cultural, or environmental reasons.
Answer:
Through sharecropping, white landowners hoarded the profits of Black workers' agricultural labor, trapping them in poverty and debt for generations. Black people who challenged this system of domination faced threats, violence, and even murder.
Explanation: