African American Roles in Society By AllynH 1619 First African Slaves 1775 Revolutionary War 1793 Cotton Gin 1853 Harriet Tubman 1857 Dred Scott Case 1868 14th Amendment 1870 15th Amendment 1905 Niagara Movement 1909 NAACP 1920 Harlem Renaissance 1955 Martin Luther King, Jr. 1955 Rosa Parks 1964 Civil Rights Act 1967 Thurgood Marshall 2008 Barack Obama