It increased there because plants like tobacco grew well there, so people needed more slaves to harvest the crops.
On December 8, 1941, the day after the Japanese attacked Pearl Harbor, President Franklin Roosevelt delivered this "Day of Infamy Speech." Immediately afterward, Congress declared war, and the United States entered World War II.
The answer would be the Mycenaean Greeks increased
greater power in terms of Military, and Economy. They presented several modernizations
in the fields of manufacturing, building and military infrastructure, while
trade above massive areas of the Mediterranean was vital for the Mycenaean
economy.
It seems they are struggling and trying to figure something out. It shows that they did not have a easy life during there time, they worked with what they had.