What does it mean when an administrator withdraws ""into an ivory tower""?

I’m annoyed but glad that my history teacher left and quit her job as a teacher to become a flight attendant

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.

Which of the following groups were allies against the pequot indians during the pequot war?