Importance, as it regards to a city, is relative. But in this case, I believe you're referring to it's historic and cultural significance.
Savannah is one of the very few Southern cities that was built in the colonial era and was not destroyed in the Civil War. After Sherman's march through Atlanta, he took his army North towered Savannah. As he entered the city, he found it to be very beautiful and could not bear to destroy it. This preserved all of the great architecture the now makes Savannah famous.
With the vast amount of cultural history in Savannah, coupled with their excessively large St. Patricks's day celebration, Savannah is commonly felt to be important.
The Savannah River is the eastern border for much of Georgia and its land and water is shared with South Carolina. The city of Savannah was named after the river.
For the most part the Savannah river borders the states of South Carolina and Georgia.
The Savannah river was formed by the joining of the Seneca River and the Tugaloo River at Hartwell Dam in Georgia. It forms the border between South Carolina and Georgia.
The big old savannahh river.
It is named after the Savannah River.
The Savannah River and the Atlantic Ocean.
The temperature of the Savannah River in Augusta, Georgia varies depending on the time of year. It is about 20 miles from the Atlantic Ocean.
chattahoochee river
savannah
The Chattahoochee River forms the lower half of the border between Georgia and Alabama.
The Savannah River and the Chattahoochee River if you listen to country music.
CSRA - Central Savannah River Area