In the early 1900s, the Homestead Act a. was modified to allow settlers to obtain larger, more practical-sized farms. b. was repealed by Congress. c. was amended to reduce the size of a homestead from 160 acres to 80 acres. d. was amended to increase the residency requirement to 10 years.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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