Answer:
The most correct way to write this would be U.S.,
Explanation:
I have a few opitions which are all techincally grammaticlly correct.
First, the radio signals came from the United States; then they came from Canada. (More formal)
...came from the U.S. but then.... (also grammatrically correct)
...from the U.S., then from ....
hope this helps :)
The characters in Dragonwings demonstrate their sense of principles by helping others. Moon Shadow, for example, is an extremely disciplined kid who consistently looks out for his dad's best interest over his own. Throughout the novel we see characters acting in generous ways. At the end of the day, Dragonwings suggests that people who look out for other people are way more awesome than those who just think of themselve