The 13th amendment to the u. s. constitution was a. unnecessary due to the emancipation proclamation b. required to limit the emancipation proclamation c. necessary to abolish slavery nationwide forever d. intended to grant citizenship to former slaves

Which of the following was probably the most difficult challenge facing construction of the railroad?

What primary benefit did theodore roosevelt’s see in digging a canal through panama?

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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