History of the Jews in Puerto Rico Very few American Jews settled in Puerto Rico after it was ceded by Spain to the United States under the terms of the 1898 Treaty of Paris, which ended the Spanish–American War. The first large group of Jews to settle in Puerto Rico were refugees fleeing German–occupied Europe in the 1930s and 1940s. The second influx came in the 1950s, when thousands of Cuban Jews (most of Eastern-European descent) fled after Fidel Castro came to power. The majority immigrated to Miami, Florida, but a sizable portion chose to establish and integrate themselves on the neighboring island because of Puerto Rico's
Isla de Ratones (Ponce, Puerto Rico) which translates into "Mice", comes from the large number of rodents found in the island. In 2010, the Sociedad Ornitológica Puertorriqueña (Puerto Rican Bird Society) and the Ponce Yacht and Fishing Club launched a campaign to eradicate the black rat from the Island. Though not officially a nature reserve, the island is administered by the Puerto Rico Department of Natural and Environmental Resources. Isla de Ratones (Ponce, Puerto Rico) Isla de Ratones is a small uninhabited island off the southern coast of Puerto Rico, off the coast of Ponce. The island is part of barrio Canas in the municipality of