The history of Suriname during World War II was mainly focused on protecting the bauxite industry and guarding the borders with French Guiana which was part of Vichy France. From November 1941 onwards, 2,000 American troops were stationed in Suriname who transformed Airstrip Zanderij into a major airport, and constructed defensive works. No actual battles took place in Suriname. There was a political crisis in 1943, because Governor Johannes Kielstra used the state of emergency to imprison political opponents.