Answer:
The answer is B.
The resources were plentiful for these industries
Step-by-step explanation:
I had a quiz and got it right. 
Also, America was full of abundant natural resources and they were easy to get. 
Hope this help and don't forget: 
Mondays, Tuesdays, and Friday I will give you guys a warm-up and you are free to answer it with 5 sentences. 
I'm here if you have any question on hw 
You can also add me if you like
Have a nice weekday :D