Why is no mans land hard to get through

Which is the best example of a primary source ducument useful in the study of history ?

In what ways did president richard nixon send mixed messages regarding civil rights? a. he placed southerners on federal courts and increased busing. b. he supported segregation as well as affirmative action. c. he criticized school busing but initiated affirmative action. d. he increased school busing but vetoed affirmative action.

Under the article of confederation everyone had to agree so it was hard to get amendments passed true or false