Why is "Spain and the American Civil War" trending?

Wikipedia Overview

During the American Civil War, the Kingdom of Spain was the target of intense diplomatic efforts by representatives of the United States and the Confederate States of America. At the start of the war, both sides believed that Spain was the likeliest European country to recognize the Confederacy, due to having poor relations with the United States long before Secession, and the persistence of slavery in Spanish Cuba and Puerto Rico. For her part, Spain appreciated that a successful rebellion would reduce American expansionism and allow the recovery of Spanish influence in Hispanic America, but she was reluctant to intervene unilaterally because of long-standing policies of cooperation with Great Britain and France, along with avoiding conflict with the United States. Spain discussed the possibility of diplomatic recognition with her allies, and recognized Confederate belligerency from June 17, 1861, allowing Confederate warships to use Spanish ports. Cuba was also an important base for blockade runners in the American Civil War, most of which were owned and crewed by British citizens.