Respuesta :
The main reason why some Americans wanted the United States to help Cuban revolutionaries fight against Spain in the late 1890s was because "c. Americans feared that other foreign powers would gain power if the United States did not get involved" and they wanted to influence the region.
I believe the answer is: c. Americans feared that other foreign powers would gain power if the United States did not get involved.
At that time, the soviet union was known to give military aid to Cuban revolutionaries against the Spanish government. United States see this as a threat that might spread communism influence to south America, so they decided to also get involved in the revolutionary.