When did lyndon b johnson became president

1) the french and indian war was a smaller war that was a part of what larger european war? 2) what was the first direct tax placed on the colonies by the british government? 3) how did the stamp act affect the prices of goods? 4) what happened to the stamp act as a result of colonist protest, boycotts, and the stamp act congress?

Was the us justified in using the atomic bomb on hiroshima and nagasaki? why or why not?

Which of the following was a goal of european conservation in the early 1800