Answer:
A. The Democrats
Step-by-step explanation:
Good Mornin, The Ostend Manifesto was a proposal put forth in 1854 by American diplomats James Buchanan, John Y. Mason, and Pierre Soulé. They believed that the annexation of Cuba was essential for the safety and success of the United States. The proposal suggested that the United States should acquire Cuba "by all means necessary", even if that meant using force if Spain refused to sell it. At the time, the Democratic Party was generally in favor of expansionism and the idea of manifest destiny, so they were more likely to support the goals outlined in the Ostend Manifesto.