The correct answer is letter D
After the victories against Carthage in the Punic Wars (264-146 BC), there was a great Roman expansion in the Mediterranean Sea region and on the European continent, causing Rome to create the largest empire that had ever existed in antiquity. In five centuries, Rome had extended its dominions in Europe, North Africa, and Asia.
However, Roman expansion generated internal changes in the organization of society. Prior to the intensification of territorial expansion, much of the agricultural work in Rome was carried out by free men, mostly peasants. But as the expansionist process required an ever-growing army, soldiers were recruited from the peasants, leaving the land with little labor to work it.