Which factors protected russia from control by napoleon's army?

In the first half of the 20th century,literacy tests,poll taxes, and grandfather clauses were passed by the southern states in order to

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

How did the invention of the cotton gin affect slave labor in the united states? a. there was a forced migration of slaves from the south to the north. b. slave-owning cotton planters were gradually forced to sell their plantations. c. more slaves were purchased to work on cotton plantations in the south. d. the reduced need for labor on cotton plantations led to a decline in slavery. e. slaves were moved from cotton plantations to sugar plantations.