From the start of American involvement in World War II, Roosevelt took the lead in establishing a grand alliance among all countries fighting the Axis powers. He met with Churchill in a number of wartime conferences at which differences were settled amicably.
Answer:
Expansion lead the economic promises and fueled the manifest destiny but it also led to sectional tension over slavery. The north contained a lot of abolitionists while the south was commonly pro-slavery, this increased sectional tension because each side wanted to see their ideals extended into the west.
Democracy (?)
You mean, people vote right?
Facing severe financial crisis, Louis XVI appointed three ministers who tried progressive reforms but failed under the pressure of opposition from the privileged classes of the society.