What is one way that historians can establish the authenticity of a primary source?

What city was taken back by sumerians in 2100 bc

Write a descriptive essay as a participant observer describing the culture and the lifestyle of the lakota tribe based on information from the online link. be sure to read all journal excerpts before writing the essay. when possible, include a description of family, education, religion, economic, and political systems you observed in the excerpts.

Which statement describes the middle passage