What does waves mean in the sentence, “Around 1500 B. C. waves of new people began crossing the Hindu Kush into India”?

When president johnson vetoed a law that would extend the freedmen’s bureau, congress reacted by supporting the veto and closing the freedmen’s bureau. writing a new law to show support for the black codes. overriding the veto and expanding the agency’s powers. drafting a law to prevent african americans from voting.

Who believed that the best economic system was on in which businesses compete to gain profit with minimal or no government control

Mid to high level clouds that look like layered blankets are called