What was the civil war about?

The civil war started when the slave & the non-slave states sought for power in the national government.

Populations;
Slave; 9 million
non-Slave; 22 million

When the war broke out, the North and the south had fought for over 4 years until the South had surrendered and the North was victorious. The states then returned back to the union.

The amount of people that died compared to other wars the nation had fought are shown in the graph by google.

Ibelive the answer is a

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

producing or giving rise torelating to or engaged in the production of goods, crops, or other commodities.

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.