Which of the following is a primary source? a. a texas history textbook b. a documentary film about the trail of tears c. a biography of alexander graham bell published in 1995 d. a love letter written to john adams from abigail adams

The answer is going to be letter D. or the last option.

Hope this helps!

I think it is a documentary film about the Trail of Tears. In the study of history as an academic discipline, a Primary Source is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study. I looked this up for you. Hope this helps;)

b.   jim crow laws were enacted in northern states.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

hope this .

plz give me brainliest!