The declaration of independence refers to rights as being unalienable what does unalienable mean

Which letter correctly labels the mississippi river? a b c labeled map of the mississippi river and surrounding regions.

Approximately how many americans, from both the north and the south, were killed in battle during the civil war?

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.