One reason the Human Population has drastically increased is due to advances in medicine.
Another reason the Human population has drastically increased is an increase in agriculture supplying more people with access to healthy foods.
One reasons why global energy consumption has dramatically increased over the past 200 years is due to an increase in population which requires a higher demand for electricity. Another reason is due to the fact that as time goes on more and more people are starting to gain access to electricity in other countries which increases the amount of energy we use and consume globally.
One reason the global energy consumption has drastically increased is due to an increase in Industrialization which requires more energy.
The U.S. takes up about 4% of the global population and takes up a little over 17% of the global energy consumption. The U.S. consumes this much energy even though it takes up 4% of the global population because 100% of the U.S. has access to electricity and is consumed for everyday life(like using these appliances behind me). Whereas other countries don't have as much access to electricity as the U.S. does.