In case of what country's attack was the origins of the Central Powers?
Central Powers The Central Powers (German: "Mittelmächte" ; Hungarian: "Központi hatalmak" ; Turkish: "İttifak Devletleri" or "Bağlaşma Devletleri" ; Bulgarian: Централни сили "Tsentralni sili" ), consisting of Germany, Austria-Hungary , the Ottoman Empire and Bulgaria – hence also known as the Quadruple Alliance (German: "Vierbund" ) – was one of the two main factions during World War I (1914–18). It faced and was defeated by the Allied Powers that had formed around the Triple Entente. The Powers' origin was the alliance of Germany and Austria-Hungary in 1879. The Ottoman Empire and Bulgaria did not join until after World War I had begun, although the Ottoman Empire retained close relations with both Germany and Austria-Hungary since the beginning of the 20th century.
Paris in World War II Paris started mobilizing for war in September 1939, when Nazi Germany invaded Poland, but the war seemed far away until May 10, 1940, when the Germans attacked France and quickly defeated the French army. The French government departed Paris on June 10, and the Germans occupied the city on June 14. During the Occupation, the French Government moved to Vichy, and Paris was governed by the German military and by French officials approved by the Germans.