Virginia tobacco farmers confronted what major challenge in the1600s?

Which of harriet martineau’s books is a foundational treatise on sociological data collection?

Business people who received land grants to recruit new settlers to the area were known by what term

What event started the space race and made americans feel their security was threatened a.) alan shepard's suborbital flight. b.) the launch of sputnik c.) the launch of explorer d.) the cuban missle crisis