Please answer having a lot of trouble

What principle did president truman invoke in sending u.s. troops into south korea without first asking congress to declare war?

Plz although president washington was not a member of the federalist party or the republican party his closest relationship was with, a. john adams. b. james madison. c. alexander hamilton. d. thomas jefferson.

His is the name of the group in the house of representatives that, in 1947, began hearings to expose communist infiltration in american life. unfortunately, a good deal of the evidence they used was based on hearsay and conjecture, meaning innocent people were harmed by their findings.