Why did slavery start in the united states? how long did it last for?

How and why did many southerners attempt to stop the laws congress passed?

Me ! which of the following statements describes how the punic wars contributed to the development of the roman empire? a)they allowed the romans to focus more on expanding into the western mediterranean. b)they resulted in the overthrow of the roman republic and establishment of the empire. c)they marked the end of roman expansion in the mediterranean region. d) they forced the romans to reorganize their government with an emperor as ruler.

Who were the people that migrated south into india and indus valley