Farming/ slavery.
This answer really depends on what the question is asking, the southern economy banked heavily off of farming, BUT it was impossible to provide and have such an abundance of crops without slavery. So, it depends on the options you have.
Hope this helps, man!
Answer:
During the Civil War , federal powers expand to include an income tax and a national currency.
The romans helped the persian empire.
<span>Choosing to engage in military action to assist another country is an example of a military alliance. A military alliance is an international agreement among countries who promise to help and support each other in times of wars or crisis among countries. A coalition is similar, but in this case, there is already a known crisis when help is given.</span>
