Will mark brainliest Which was one major reason the United States entered World War I on the Allied side?

France invaded Germany and Germany was an ally of the United States.

Germany attacked passenger ships and U. S. ships that carried supplies to the Allies.

England violated the U. S. policy of neutrality.

Woodrow Wilson wanted to be a peacemaker.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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