In case of what country's attack was the origins of the Central Powers?
Dual Alliance (1879) The Dual Alliance was a defensive alliance between Germany and Austria-Hungary, which was created by treaty on 7 October 1879 as part of Bismarck's system of alliances to prevent or limit war. The two powers promised each other support in case of attack by Russia. Also, each state promised benevolent neutrality to the other if one of them was attacked by another European power (generally taken to be France, even more so after the Franco-Russian Alliance of 1894). Germany’s Otto von Bismarck saw the alliance as a way to prevent the isolation of Germany and to preserve peace, as Russia would not wage war against both empires.
Club of great powers The Great Powers' Club or The Club of Great Powers is a term used by historians to refer to a collection of empires in the ancient Near East and Egypt between 1500-1100 BC, or the Late Bronze Age. These powers were Assyria, Babylon, Egyptian Empire, Hittite Empire, and Mitanni, viz. the major powers in Mesopotamia, the Levant and Anatolia.