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 :)
Sometimes I wish
To go back in time
To spend more time together
Sometimes I wish
To tell you how much I care
To make you feel better
Sometimes I wish
To not be able to think
To be happy forever
The second sentence is correct
It is reasoning logically from the cause to the effect and the general to the specific
i.e.
the attached picture