What is the product of 7 radical 3 and 9 radical 15 in simplest radical form

HEY

Which was not characteristic of rome's two-hundred-year pax romana? oppression independence stability peace

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.

According to some historians which marks at the beginning of the us civil war