At the peak of the Roman Empire's reach, around A.D. 117, the Empire stretched as far north as modern Scotland, stretched down through Europe east into Asia as far as the border between modern day Iraq and Iran, with its southern reaches extending into northern Africa.
Lincoln ran on a political platform opposed to the expansion of slavery in the territories. His election served as the immediate impetus for the outbreak of the Civil War.
When agriculture began, the early people farmed, and soon got a surplus of food. This surplus of food meant that not everyone had to farm, and that led to specialized jobs. Specialized jobs led to trade which led to economy, a major key point in a civilization.
An herbivore is an organism that does not depend on others for food
