Last latin american country to outlaw slavery?

Ineed asap i will give 30 pointsps: the last word says splits

Dentify one advancement from the industrial revolution that had a significant impact on agriculture, and discuss the benefits this advancement had on the industry.

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.