求翻译：美国黑人在本国历史上起过重要作用，他们积极参加美国独立战争和反法西斯战争并对发展美国的经济文化也作出了很大贡献。是什么意思？

African Americans have played an important role in their history, their active participation in the American War of Independence and the anti-fascist war and the economic and cultural development of the United States also made a major contribution.

Blacks in the United States history of the country, played an important role to actively participate in the American War of Independence and war against fascism in the United States and the economic and cultural development has also contributed a great deal.

The black Americans have played the vital role in our country history, they attended the American Revolution and the antifascist war positively and to develop US's economical culture also to make the very big contribution.

United States black people played an important role in their history, their active participation in the United States and the war of independence and anti-fascist war on the development of United States economic culture has made great contributions.

正在翻译，请等待...