National Independence Day (Poland) Marshal Józef Piłsudski assumed control of Poland. It was a day of military ceremony since 1920. The holiday was constituted in 1937 and was celebrated only twice before World War II. After the war, the communist authorities of the People's Republic removed Independence Day from the calendar, though reclamation of independence continued to be celebrated informally on 11 November. The holiday was officially replaced by the National Day of Poland's Revival as Poland's National Day, celebrated on 22 July anniversary of the communist PKWN Manifesto under Joseph Stalin. In particular, during the 1980s, in many cities, including Warsaw, informal marches
Martyrs' Day (Panama) be a significant factor in the U.S. decision to transfer control of the Canal Zone to Panama through the 1977 Torrijos–Carter Treaties. After Panama gained independence from Colombia in 1903, with the assistance of the U.S., there was resentment amongst some Panamanians as a result of the Hay–Bunau-Varilla Treaty, which ceded control of the Panama Canal Zone to the U.S. "in perpetuity" in exchange for a 10 million dollar initial payment and yearly 250 thousand dollar payments thereafter. In addition, the United States Government purchased title to all the lands in the Canal Zone from the private owners. The Canal