What is the civil war about?

The Civil War in the United States began in 1861, after decades of simmering tensions between northern and southern states over slavery, states’ rights and westward expansion. The election of Abraham Lincoln in 1860 caused seven southern states to secede and form the Confederate States of America four more states soon joined them.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.

it would be d). more resources must be obtained to attain that combination of goods and services