Answer:
because in the course of the 3rd century Romen was beset by crises. I pretty sure that is right hope this helps
Russia is by far the biggest landmass in Asia, due almost entirely to Siberia, which stretches all the way to the Pacific Ocean. Much of this area is not inhabited, however.
The Civil War started because of uncompromising differences between the free and slave states over the power of the national government to prohibit slavery in the territories that had not yet become. I believe so.