What accounts for the spikes in american defense spending in the 1950s?

Two types of resources are natural and human. true or false

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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

Select all that apply. history is the recorded story of the interaction between . and o ideas o patterns o future events o environment o people neyt question o ask for