What advancement in transportation became prominent around the year 1820 in Georgia?

The advancement in transportation that became prominent around the year 1820 in Georgia was the use of steamboats. During this period, steamboats revolutionized travel and trade along the rivers, making it much easier and faster to transport goods and passengers. Waterways like the Savannah River allowed for increased commerce and economic growth, as steamboats could carry larger loads compared to traditional flatboats or canoes. This era marked a significant shift in transportation methods, enhancing connectivity within the state and facilitating access to markets.

The introduction of railroads, while important in the broader context of transportation, did not become prominent in Georgia until the later years of the 1830s. Automobiles of course were not developed until much later in the 19th century. The establishment of highways also gained significance later, particularly in the 20th century as infrastructure developed. Thus, the correct answer highlights the early innovations in riverine transportation that transformed Georgia's economy and society during that time.