How can this document be used to justify Americans going into war with Mexico? (DBQ)

How did the relationship between settlers and native americans change after the homestead act was put into place ?

Which of the following episodes led to widespread charges that president reagan was not in adequate control? a. the u.s. retreat from lebanon after the bombing deaths of 241 u.s. marines as they lay sleeping in their barracks near beirut b. the trading of arms for hostages and the illegal funding of a right-wing insurgency in the iran-contra affair c. the sale of millions of acres of public lands to private corporations by the department of interior d. the proposal to congress, year after year, of federal budgets with huge deficits that ultimately ended up tripling the national debt

How was george washington able to defeat the british in the battle of trenton and princeton