U.S. involvement in Cuba By Bongerr 1854 The U.S. government’s Ostend Manifesto Secret plan to buy cuba Feb 15, 1898 USSR Maine explodes May 29, 1898 United States Invade Cuba The United States Invade Cuba in order to get "revenge" on the Spanish "attacking" the USS Maine. Dec 10, 1898 Cuba gains independence with help of U.S. 1901 America Enacts the Platt Amendment 1902 The Republic of Cuba is launched 1959 Kennedy establishes Cuban Refugee Program 1961 Cuba announces itself as a social state