What emperor was given credit for having the aqueducts built

Which of the results of cultural blending do you think has the most lasting effects on a country

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.

By july of 1950 north korean forces had pushed south korean forces as far south as