In what ways did the development and implementation of steam machines change the world?

Which of these rose during the great depression?

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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

The data in the timeline best support the conclusion that the united states supplied arms and gave other support to the allies in order to