4. The Louisiana purchase was important economically to the United States because it-

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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.

What choice describe some of the difficulties john adams faced as president

As nation-states began to arise in europe, who became the most powerful individuals?