What was one outcome of the Cuban rebellion against Spanish rule?

One significant outcome of the Cuban rebellion against Spanish rule was an increase in American investment in Cuba. As the conflict unfolded, American interests, particularly in the sugar industry and other businesses, became increasingly involved and concerned about the stability of the region. The rebellion drew attention to the strategic and economic importance of Cuba to the United States, leading to greater financial investments as Americans sought to capitalize on the potential for growth in a post-rebellion Cuba.

This investment tendency was further intensified by the U.S. response to the war, which included the Spanish-American War of 1898. The war resulted in the U.S. defeating Spain and ultimately leading to a significant American presence in Cuba. Hence, American investments facilitated not just economic engagement but also set the stage for the U.S. to exert influence over Cuban affairs in the future.

The other options do not accurately reflect the complex realities following the rebellion. A complete withdrawal of Spanish forces only occurred after the Spanish-American War. A diplomatic treaty favoring Spain would not align with the outcomes of the rebellion, which sought to free Cuba from Spanish dominance. Similarly, granting greater autonomy for Spain in the Caribbean contradicts the aim of the rebellion, which was aimed at gaining independence and reducing Spanish control.