Which invention made plantations in the South more profitable than they had ever been? A. Cotton gin
B. Telegraph
C. Steel plow
D. Barbed wire

Which of the following individuals is promoting the idea of nationalism?

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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

Which of the following wars was the most devastating to oklahoma? a. american revolution b. mexican-american war c. civil war d. world war i