What was one factor that caused the british to surrender at yorktown? . a. british soldiers were suffering from disease and refused to fight.. b. george washington's soldiers outnumbered the british soldiers two to one.. c. british troops received a false message from the king that the war was over.. d. french and american forces joined together to block the british from getting supplies.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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