What is the historical significance of the ostend manifesto in terms of american interest in cuba and the spanish- american war in 1898

The Ostend Manifesto of 1854 reveals some American perceptions of the role of Cuba for the US interests. The common idea of the three diplomats involved in the memorandum is: getting control of Cuba is relevant for the national interest and the security of the United States. Action was justified on the ground of fears about a revolt in Cuba similar to that of slaves in Haiti and an desire to expand American slave territory. When the document was made public, the perception was that it advocated taking Cuba from Spain. In some ways, it heralds a US decisive action regarding Cuba, an opportunity that materialized 44 years later with the Spanish-American War.  

Explanation:

im not sure its either a leader of a group of congresspeople or a person from a congressmans district

sorry im not sure