Do you agree or disagree with the system of checks and balances

Idont want to fail what happened in iraq most immediately after saddam hussein was removed from power? a. the new government used chemical weapons against civilians. b. isis declared the formation of the islamic state. c. *** iraqi refugees fled to neighboring countries. d. civil war broke out between different ethnic and religious groups.

What would lead a historian to consider two events to have a relationship of correlation rather than causation

Why did reagan have the united stars invade grenada