Why do both major political parties (Democrats and Republicans) allow gerrymandering to happen?

What man proposed a solution to the issue of slavery in the territories suggesting the idea of popular sovereignty

How did european exploration and expansion cause the african slave trade to expand? a. european explorers discovered the slave trade and expanded it across the indian ocean into south asia. b. arab armies captured european explorers and forced them into slavery. c. european traders shipped enslaved africans to work on plantations in european colonies in the americas. d. european explorers captured african people and forced them to work on their ships.

Which of the following statements best explains why societies passed worker safety laws following the industrial revolution