Short answers

Short Answer 1
Through the years Egypt was advancing. They went from plain woods weapons to metal as they grew more knowledge. They invented the plow which was used for farming. and they also inventing the sail boat to help them travel through the Nile River.

Short Answer 2
The Egyptian pyrimads were used for a few things. First, they used them to hid valuables. They also store the mummies of the pharaohs and they were used for protection.