Final answer:
The Atlanta Race Riot of 1906 was the event with significant long-term impacts on race relations in Georgia, leading to the exodus of the black community and increased legislative discrimination.
Step-by-step explanation:
The event that had lasting effects on race relations in Georgia and led to outcomes such as businesses and people leaving the black community in Atlanta, the passage of Georgia's Prohibition Laws, and more restrictions on black suffrage is the Atlanta Race Riot of 1906.
During this period, widespread racism and economic strife prompted the Great Migration, in which approximately 6 million African Americans relocated from the rural South to the Northern cities in search of industrial work opportunities. Despite the fact that segregation was no longer lawful in the North, racism and prejudices persisted, often erupting into violent race riots, such as the notable one in Chicago in 1919. The rise of the Ku Klux Klan activities also contributed to racial tensions. This renaissance of the Klan targeted not only African Americans but also immigrants and religious minorities, adding to the climate of fear and discrimination.
In the early 20th century, there was a wave of violent attacks against African Americans, including the Tulsa Race Massacre of 1921. The growth of white supremacist groups like the Ku Klux Klan during this era, and intense discrimination, prompted legislative actions like the Immigration Act of 1924, which reflected the racial animus of the time by limiting immigration and establishing a quota system biased towards older immigrant communities.