What arguments did Black Americans make in favor of their rights as citizens of the United States during the mid-1800s?

Answer:Free African American Christians founded their own churches which became the hub of the economic, social, and intellectual lives of blacks in many areas of the fledgling nation. Blacks were also outspoken in print. Freedom's Journal, the first black-owned newspaper, appeared in 1827. This paper and other early writings by blacks fueled the attack against slavery and racist conceptions about the intellectual inferiority of African Americans.

Explanation: African Americans also engaged in achieving freedom for others, which was a complex and dangerous undertaking. Enslaved blacks and their white sympathizers planned secret flight strategies and escape routes for runaways to make their way to freedom. Although it was neither subterranean nor a mechanized means of travel, this network of routes and hiding places was known as the "underground railroad." Some free blacks were active "conductors" on the underground railroad while others simply harbored runaways in their homes. Free people of color like Richard Allen, Frederick Douglass, Sojourner Truth, David Walker, and Prince Hall earned national reputations for themselves by writing, speaking, organizing, and agitating on behalf of their enslaved compatriots.