It introduced the use of coal oil and natural gas as sources of fuel.
The delegates to the Constitutional Convention finally agreed the Three Fifths Compromise, that slaves should be counted at three fifths of their real number.
The Calender is based on the farming seasons, however, the Egyptians noticed that they need a few more days to fit the seasons, So the calendar is important Egyptian achievement because they added five days, holidays to thank gods, and they invented 365-day calendar.
This one was A. Slavery because I have answered this question before im lik 99% sure
These lands had been worked by settlers and the much larger settlements of local Native American Kumeyaay peoples on the missions
