Answer:
A The Americans built the Suez Canal.
Assuming you're referring to World War I, the main reason why many workers participated in strikes following the war is because the country had "de-mobilized" from the war, meaning that there were fewer jobs and lower wages.
Answer:
To make sure no one branch has to much power.
Explanation:
Without checks an balances the branches of government could do whatever they wanted to. They could declare war and lift trade bans.
A policy or attitude of letting things take their own course