Wilhelm II (Friedrich Wilhelm Viktor Albert; 27 January 1859 - 4 June 1941) was the last German emperor (Kaiser) and King of Prussia from 15 June 1888 until his abdication on 9 November 1918, which marked the end of the German Empire and the House of Hohenzollern's 300-year reign in Prussia and 500-year reign in Brandenburg.
Born during the reign of his granduncle Frederick William IV of Prussia, Wilhelm was the son of Prince Frederick William and Victoria, Princess Royal. Through his mother, he was the eldest grandchild of Queen Victoria of the United Kingdom. In March 1888, Frederick William ascended the German and Prussian thrones as Frederick III. Frederick died just 99 days later, and his son succeeded him as Wilhelm II.
In March 1890, the young Kaiser dismissed Chancellor Otto von Bismarck and assumed direct control over his nation's policies, embarking on a bellicose "New Course" to cement Germany's status as a leading world power. Over the course of his reign, the German colonial empire acquired new territories in China and the Pacific (such as Jiaozhou Bay, the Northern Mariana Islands, and the Caroline Islands) and became Europe's largest manufacturer. However, Wilhelm often undermined such progress by making tactless and threatening statements towards other countries without first consulting his ministers. Likewise, his regime did much to alienate itself from other great powers by initiating a massive naval build-up, contesting French control of Morocco, and building a railway through Baghdad that challenged Britain's dominion in the Persian Gulf. By the second decade of the 20th century, Germany could rely only on significantly weaker nations such as Austria-Hungary and the declining Ottoman Empire as allies.
Despite strengthening Germany's position as a great power by building a powerful navy and promoting scientific research within the country, Wilhelm's tactless public statements and erratic foreign policy greatly antagonized the international community and are considered by many to have significantly contributed to the fall of the German Empire.