How long were the enlistments to the Union army that Lincoln called for?

three months

Explanation:

On 15 April 1861, President Abraham Lincoln summoned 75,000 militia to serve for three months. (Oversubscribed, 91,816 were actually accepted.) Then, without legal authority, he increased the regular army by 22,714 men and called for 42,034 three‐year volunteers.

Both want a change from being ruled by an absolute ruler, both have economic instability from war debt, both have social inequality. And also, both started because of enlightenment ideas. What was the major difference between the American and French Revolutions? The American revolution didn't have the reign of terror.