They didn't have to worry about farming because they had slaves to do it for them.
Hope this helps!
27 is a factor of 54 so 27
Sub fields focus more on traditional breakdowns of studies.
D. Coal.
Coal is the most abundant fossil fuel. It is found most abundantly in the United States of America. It was said that coal reserves can are around 909 billion tonnes, which sustaining the same rate of usage, can be used for more than 100 years.
