Which one of the following has not been proposed as a mechanism of plate motion

a) slab-pull
b) ridge-push
c) mantle convection
d) crust-core convection

it's a science question i accidentally pressed history

Which of the following brought about the final settlement of the official boundary lines of the state of texas? the peace treaty of the mexican-american war the 1845 act signed by the president that made texas a state the reincorporation of texas at the end of the civil war the compromise of 1850

Which of the following statements described the sons of liberty

Four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal. —"the gettysburg address," abraham lincoln which quotation correctly uses an ellipsis to shorten lincoln’s words?