Yes, the United States is a country. Yes, by states it means the 50 states that make up the United States. Florida, California, and Hawaii are all examples of states.<span />
It was important, because many fields were on the flood plains of the Nile. It was also important because the flooding of the Nile brought mineral and nutrient rich soil, which made the farming land more fertile. Without the knowledge of the flooding of the Nile, Egyptian agriculture might have been destroyed. It is still important to farmers along the edge of the Nile to this day.
It limits families to one child, limits the population growth, the male/female ratio, and old age.
The continental plate is less dense that the oceanic plate and so sinks underneath the oceanic plate. The oceanic plate holds water and so when the continental plate sinks underneath it, the water from the oceanic plate covers the continental plate.
By looking at the satellite photograph below that shows the Mississippi River entering the Gulf of Mexico, the depositional feature in the Gulf of Mexico is best identified as a delta. A delta is when a river will divide itself into many other rivers and then goes into a larger water body.
