huge history test tomarrow don't know the answer to these history questions help!! 8th grade american history!?

i need help answering these questions.

Define the concepts of nullification, secede, and states' rights

Explain how tariffs led to the Nullification Crisis and how the crisis led to increased tension between the North and the South

Explain how voting rights increased during the 1820s and how more people were able to get involved in the political process during the 1820s

Compare the growth of the United States on maps from 1800, 1803 (Louisiana Purchase), 1819 (Florida), 1845 (Texas), 1844 (Oregon Territory), 1847 (Mexican Cession), and 1853 (Gadsden Purchase)

Explain how Manifest Destiny and Westward expansion was a contributing factor to the Civil War.

Describe how the Texas War for Independence and the Mexican American War helped the U.S. expand.

Explain the impact of the interaction between white settlers and American Indians

Define the Indian Removal Act

pleaseeeeeeeeeeeee helppppp!!!!