How did Garvey and the UNIA impact Harlem?

At the UNIA's First International Convention in 1920, people lined the streets of Harlem to watch Garvey and his followers, dressed in their military outfits, march to their meeting under banners that read "We Want a Black Civilization" and "Africa Must Be Free." All the pomp brought Garvey ridicule from mainstream ...

Marcus Garvey left his native Jamaica for the United States in 1916. He established branches of his Universal Negro Improvement Association throughout predominantly Black communities of the Northeast.

is this question from a book? ?

i am 99% sure that the increase of goods was because of nafta nafta stands for the north american free trade agreement to lift tariffs