What contributed to the Caddo eventually selling their land to the United States? They became indebted to the US government after trade failures.
Their land was the subject of many disputes with Europeans.
Their land was unsuitable for raising cattle or hogs.
They wanted to move to their ancestral homeland in Oklahoma.

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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