Since 1914 the 51-mile- (82-km-) long Panama Canal, which connects the Atlantic and Pacific Oceans, has afforded a long-sought shortcut for shipping and assures the country’s standing as one of the most strategic transportation hubs of the world. The canal also secures Panama’s ongoing role in international affairs and world commerce. The United States relinquished jurisdiction of the Panama Canal on December 31, 1999, marking an unprecedented shift in Panamanian society. For the first time in nearly a century as an independent nation, Panama controlled the entirety of its national territory.
Demetrio Carceller Coll and his sons, Spanish businessman. He was the son of Demetrio Carceller Segura, Minister of Industry and Commerce at the beginning of Franco's dictatorship. Demetro Carceller y Arce (1962), his son, is a director and shareholder of Sacyr (6.04%), director of Gas Natural and chairman and shareholder, with 23% of the beer Estrella Damm. He is the president of the Disa oil plus shareholder of Natural Gas, Ebro and CLH.
During World War II, construction of military bases and the presence of larger numbers of U.S. military and civilian personnel brought about unprecedented levels of prosperity to the city. Panamanians had limited access, or no access at all, to many areas in the Canal Zone neighboring the Panama city metropolitan area. Some of these areas were military bases accessible only to United States personnel. Some tensions arose between the people of Panama and the U.S. citizens living in the Panama Canal Zone. This erupted in the January 9, 1964 events, known as Martyrs' Day.
As of the census of 2010, there were 36,484 people, 14,792 households, and 8,613 families residing in the city. The population density was 1,245.2 people per square mile (481.3/km2). There were 17,438 housing units at an average density of 595.2 per square mile (230.1/km2). As of the census of 2010, the racial makeup of the city is 71.6% White, 22.0% African American, 1.6% Asian, 0.5% Native American, 0.1% Pacific Islander, 2.9% from two or more races, and 5.1% Hispanic or Latino of any race.