I think the answer is Langston Hughes sorry if I'm wrong, but I'm like 99% sure its him....
They could use there beliefs for voting or join a pressure group
"They promised bills and laws in favor of immigrants in exchange for votes" is the one way among the following choices given in the question that political machines, such as Tammany Hall, work with and for immigrants.
Answer:
Britain retained control of the region after World War II, when it became a United Nations trust territory. Tanganyika gained independence on Dec. 9, 1961, and became a republic one year later. On April 26, 1964, it joined with Zanzibar to form the United Republic of Tanganyika and Zanzibar.