In contrast, the biological controls are self-sustaining, inexpensive and very effective once established. Biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. In the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.
Explanation:
this is what i got, if it helps marks brainliest please :)
They wanted the African Americans because to them, they had always been 'property' and had been doing their work for them for free. And without them, they wouldn't have workers.
