What does the boxer rebellion and the open door policy have to do with us imperialism

In the confederate states of america, the government could not overrule the decisions of state course. what happened to the states when they had conflicts?

Ineeed the answer asap which of the following describes the link between u.s. foreign policy and the rise of islamic extremist leaders in afghanistan during the late 20th century? apex

An example of a policy to buttress one's position would be: the spanish granting large tracts of land in texas to american settlers the missouri compromise stephen austin settling in missouri