What ended the boxer rebellion?
due to military reform, the chinese crushed the rebellion.
allied forces came in and crushed the rebellion.
the boxers seized the palace at beijing and took over.
the qing dynasty collapsed.

Boxer Uprising, Chinese nationalist revolt against foreigners, the representatives of alien powers, and Chinese Christians in 1900. Expulsion of all foreigners from China was the ultimate objective of the uprising. In 1899 a secret society of Chinese called the Yihetuan ('Society of Righteousness and Harmony'), known by Westerners as the Boxers, began a campaign of terror against Christian missionaries in the northeastern provinces. Although the Boxers were officially denounced, they were secretly supported by many of the royal court, including the Dowager Empress Cixi (Tz'u-hsi). Economic and political exploitation of China by various Western powers and Japan and humiliating military defeats inflicted by Britain in the Opium Wars (1839-1842, 1856-1860) and by Japan in the First Sino-Japanese War (1894-1895) were the main causes of Chinese resentment, compounded by general economic problems.