Original sentence: After the British invasion of Tibet by Sir Francis Younghusband in early 1904, Dorzhiev convinced the Dalai Lama to flee to Urga in Mongolia, almost 2,400 km (1500 miles) to the northeast of Lhasa, a journey which took four months.After the Dalai Lama fled, the Qing dynasty immediately proclaimed him deposed again and began claiming sovereignty in Tibet and made claims over Nepal and Bhutan as well.When he returned to Tibet in December, 1908, he began reorganising the government, but Qing troops invaded Tibet in 1910 and he had to flee to India
Edited sentence: After the British expedition of Tibet by Sir Francis Younghusband in early 1904, Dorzhiev convinced the Dalai Lama to flee to Urga in Mongolia, almost 2,400 km (1500 miles) to the northeast of Lhasa, a journey which took four months.After the Dalai Lama fled, the Qing dynasty immediately proclaimed him deposed again and asserting sovereignty in Tibet and made claims over Nepal and Bhutan as well.When he returned to Tibet in December, 1908, he began reorganising the government, but the Qing sent a military expedition of its own to Tibet in 1910 and he had to flee to India