Please help will give brainliest instantly.

Why did the free african americans fight for the patriot cause and explain why enslaved africans volunteered to fight for both sides

Explain how world war 1 led to significant changes in society

Which of the following shows that an economy is stagnating a. the gdp is neither growing nor shrinking.b. the unemployment rate is going down.c. the inflation rate is going down.d. per capita income is rising.