King george iii passed the proclamation of 1763 which set the line of western .

a.

along the mason- dixon line

c.

at the appalachian mountains

b.

along the mississippi river

d.

along the prime meridian

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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