How did the agenda of the black conventions change between 1830's and late 1840's

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.

according to this text from the preamble to the declaration, who gives men their unalienable rights?

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