Answer:
They were usually paid with units of bread and beer.
E important beacuse they help explain new ideas.
Answer:
Brainliest if helpful :)
Donald John Trump. (Aka Donald Trump)
Explanation:
Donald John Trump is the 45th and current president of the United States. Before entering politics, he was a businessman and television personality. Trump was born and raised in the New York City borough of Queens, and received a bachelor's degree in economics from the Wharton School at the University of Pennsylvania. He is 73 years old.
It expands due to the fact the mercury reacts to heat in such a way that makes it rise up the tube.