How do scientists learn about "prehistory," the time before written records of events?

What do states primarily use their reserved powers to regulate? a. services related to national citizenship b. issues that affect day-to-day life for state residents c. issues involving taxation d. issues that affect states' interaction with the federal government

Wich area did the quakers settle in

Donald trump will plan to use his emergency powers to build the wall between the us and mexico, instead of shutting down the government again?