Answer:
Hey there!
I think the answer is A. Security. As America was expanding, people went to the west for more jobs, (opportunity) and more land. Thus, they were more free to do what they wanted.
Hope this helps :)
Nice and Savoy is the answer to the question above
I believe the answer is B
Answer:
The answer should be: Companies replaced hand-operated brakes with air brakes on trains.
Explanation:
You have to think how hard it was for trains to stop with hand operated brakes. Trains go fast, and not stopping in time can be dangerous. Hope this helped :)
Answer:
Carbon Dioxide (CO2)
Explanation:
It create this climate change so yea
