Answer:
These are examples of 'checks and balances'. Offen used in Constitutional government.
Answer:
Population growth and diversity.
Explanation:
In an area with multiple enthic groups and people, socilization and growth leads to others exploring new cultures and learning about them and sharing them. This could also lead to new cultures being forged from two original cultures.
In Russia, World War I became the catalyst for the ovethrow of Czar Nicholas II and the rise of the Communist Party (Bolshevik Revolution) led by Vladmir Lenin. Russia became the first Communist country. Communism eventually spread to small countries near Russia and eventually spread to Cuba, China and Vietnam.