Answer:
1961: Ivan Allen launched "Atlanta Forward" campaign with goals of completing a highway system; a new sports stadium, and bringing professional baseball and football teams to the city.
The Atlanta Braves came to Atlanta in 1966
The Atlanta Falcons came to Atlanta in 1966
Professional teams in Atlanta show the prominence of the city. It takes a large city to support professional teams (road systems, stadiums, etc...), and Atlanta has many sports represented.
It brings attention and tourists to the city.
Explanation: