Which statement best explains a benefit of the policy of isolation enforced by the Ming and Qing dynasties?
A. China gained access to new technologies.
B. China preserved its culture and traditions.
C. China rapidly expanded its economy.
D. China developed an alliance with Great Britain.
APEX PLEASE HURRY

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.

what are the options so i can answer it

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

monitor contract compliance and results of forestry activities to assure adherence to government regulations.  

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