What advantages did the columbian exchange bring to the people of the americas? what disadvantages did it create in other parts of the world?

How does iraqs geographical location ( desert-like environment ) affect it's politcal relationships? i've been stuck on this and i'm giving a lot of points

The crittenden compromise which option explains the role that this legislation played in the buildup to the civil war? it attempted to resolve the complications introduced by the missouri compromise; this to stave off the civil war. it sought to encourage southern diplomats to take their seats in congress so their voices could be heard in government. it proposed six amendments to the constitution aimed at protecting slavery; however, its passage was blocked by congress. it attempted to establish stipulations that made secession from the united states constitutionally legal.

What caused the comanche kiowa raiding? a. gadsden purchase b. battle of alamo c. bear flag revolt d. settlement of texas