What are three ways in which early humans adapted to new environments during the stone age?

Government powers not provided to the national government in the us constitution but are rather given to the states by the 10th amendment is called?

President nixon's trip to china included apex

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.