Who went to the pan african conference in 1900

Which best describes how president kennedy apples to the audiences at the beginning of his speech?

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.

What industry was exempt from the child-labor laws passed in the factory act of 1833?