A secondary source can be more informative, providing you with secondhand accounts of an event and other background information.
Thomas paine was an author who’s most famous piece, “common sense” influenced the american revolution and paved the way for the declaration of independence
Astronomers helped because they could: help measure the time, or what day it is for the caravans.
Hopefully this has helped! :)
"<span>D. the Circus Maximus</span>" is the correct answer. The Circus (which is not at all like the present day definition of a circus) was the only venue fitted with race tracks for the horses.
