A study of the causes of the American, French, and Russian Revolutions indicates that revolutions usually occur because the A
society has become dependent on commerce and trade
B
society has a lower standard of living than the societies around it
C.
existing government has been resistant to change
D
lower classes have strong leaders

C.

Explanation: The answer is C because all of the revolutions that you said, the people all wanted a change in government, but the government is resistant to change and they quell rebellions of people who oppose them.

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

it is a because im a fod nigba