How was roman emperor constantine 1's adoption of christianity similar to charle's martel's victory in the battle of tours? a- both events made christianity the official religion of a nation b-both events legalized christianity in areas where it had been illegal c-both events were examples of christianity victory over islamic forces d-both events were examples of christianity's unifying effects in europe

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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