Final answer:
The population growth in Atlanta during the 1906 Atlanta Riot led to increased tension and violence.
Step-by-step explanation:
The population growth in Atlanta had a significant impact on the 1906 Atlanta Riot, leading to increased tension and violence (C). During this time, Atlanta experienced rapid growth due to industrial opportunities and the relocation of many African Americans from the rural South to the city. The changing demographics and competition for resources resulted in racial tensions that eventually culminated in the riot.