B. historians shouldn't project modern ideas
Answer:
Black conventions created a sense of unity and purpose among African Americans
Explanation:
The of agenda of the Black conventions between 1830's and late 1840's were aimed at promoting unity among the Black people. The African Americans joined hands in making sure the Blacks who were free were promoted and lived well. They also pushed hard in the abolition of slavery.
The Constitution ensures that judges will not be changed according to the interests or whims of another branch of government. recognizes the complexity of the law in a free society.