Which of the following factors led to the development of ancient civilizations? climate invasion agriculture location

Abraham lincoln gave his 2nd inaugural address on march 4, 1865.-as lincoln prepared to speak, the civil war was drawing to a close.

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.