The new republic had many problems. Portugal had 45 different governments in just 15 years. During World War 1 (1914–1918), Portugal helped the Allies fight the Central Powers. But the war hurt its weak economy. Political instability and economic weaknesses were fertile ground for chaos and unrest during the First Portuguese Republic. These conditions would lead to the failed Monarchy of the North, 28 May 1926 coup d'état, and the creation of the National Dictatorship (''Ditadura Nacional'').