1: both languages are writing systems that code language. (that is basically anything said in language can be written with them and could be read very loud or out loud)
2: well some of the hieroglyphs refer to the meanings but some of them sound like letters
3: And therefore some of our alphabet comes from the hieroglyphs ~ but the Greek script.
The Tennessee Valley Authority was a union that constructed dams and power plants to improve the impoverished regions during the Great Depression. (I learned about this in Segment 1 of U.S. History this year.)