Answer:
The factor which most affected the growth of suburbs around the Atlanta area is "interstate highways".
Step-by-step explanation:
The interstate highways have multiple benefits to the users. Some of their benefits include natural movement of people and cargo from place to place. However, shipments were moved by trucks at some time.
This is important to businesses because they needed to transport the products more often as they produced to the cities and towns across the country. The interstate facilities create job opportunities for many people for interstate maintenance.