African slaves were brought to the english colonies to meet the demand for a. soldiers brought about by wars with france and spain. b. soldiers brought about by wars with native americans. c. labor brought about by large-scale farming. d. labor brought about by large-scale mining operations

C. Labor bought about by large-scale farming. 

Choice A. and B. are incorrect because African slaves weren't serving as soldiers but instead as slaves. However, Choice D. is incorrect because large-scale mining operations didn't exist then. They were established later.

Hello!

Slaves were offered to the United States by the people of Africa to fill in the labor jobs such as picking cotton or harvesting tobacco stuff like that. Things such as that are known as large-scale farming. Therefore, It looks as if C would be your best answer choice! 

I hope this helped! 

I am, yours most sincerely,
SuperHelperThingy