February 12, 1910. A force of 2,000 Chinese troops march into Lhasa, the capital of Tibet. The 13th Dalai Lama, Thubten Gyatso, is forced to flee to India.

February 20, 1910. Boutros Pasha Ghali, the first native-born prime minister of Egypt, is assassinated by an Egyptian nationalist. Egypt is under British control, and the Egyptians themselves have only limited power of self-rule.

February 27, 1910. U.S. surgeons find and remove a nail from the lung of a boy by using an X-ray machine.

May 6, 1910. George V becomes King of Britain upon the death of his father, Edward VII.

May 31, 1910. The Union of South Africa becomes a self-governing dominion of the British Empire. The new government will be led by Prime Minister Louis Botha who was a leader in the defeated Boer army that fought against Britain in 1900-1901. He is now a convinced supporter of South Africa’s independence and participation in the British Dominion.

June 30, 1910. Russian prime minister Pyotr Stolypin easily persuades the Duma to pass a law that ends most aspects of Finnish independence. Russia takes over Finland completely.

August 22, 1910. After defeating the Russians in war and in peace, Japan officially annexes Korea.

October 4, 1910. Republican revolutionaries overthrow the Portuguese monarchy. 20 year old King Manuel II, who came to the throne after the assassination of his father and brother two and a half years ago (1908), flees to Gibraltar.

November 20, 1910. In Mexico, rebels begin the attempt to oust president and dictator Porfirio Diaz, who has ruled Mexico for over thirty years. Leaders in the rebellion include Francisco Madero, Emiliano Zapata, Pancho Villa, Victoriano Huerta, and Pascual Orozco.

More than a million immigrants enter the United States in 1910. The largest ethnic groups are Italians, Poles, Jews, Slovaks, and Greeks.