2. Arguments over which key issue in the United States during the 1830s and 1840s led to Civil war ​

The answer is slavery, and to perseve the union however, slavery is the main reason.

the results of roman expansion produced social conflict and civil war. julius caesar gained power and became a dictator but was then assassinated. the reign of augustus began a long period of imperial rule and peace in the roman empire. rome faced the problems of how to maintain peace, law, and order.

hope this !

brainliest?

food chain i would say only because there is competition on getting food and survival