Which of the following was the platform for the American
Federation of Labor?
A. It was a big business in the railroad industry.
B. It was a union for skilled workers.
C. It was a governmental office to help
unemployed workers.
D. It was a union for unskilled workers.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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