The emancipation proclamation issued by president Lincoln freed all of the slaves in the United States during the Civil War--although many remained enslaved illegally in the South.
The answer is b. continental break-up. During this time, the continents began to
form and also separate in different areas. It was also the time of mammals as
dinosaurs were now extinct, mammals began to flourish in the earth. The climate
was now cooling down during this period.
Mulatu Teshome is the president
