Answer:
Civil,world war and World War II
Explanation:
1)Which system did the new government created under the Constitution use?
Answer
The federal republic model.
Explanation
in the Federal model the powers are shared between the national government and local governments .
Federal means belonging or relating to the national government of a federal country rather than to only one state within it.
1.who did they fight
2.why did they fight
3.who won
4.when did it start and when did it end
5.who where the generals
6.who was the president at the time