The McMahon Line is a line agreed to by Britain andTibet as part of the Simla Accord, a treaty signed in1914. It is the effective boundary between China andIndia, although its legal status is disputed by theChinese government. The line is named after Sir HenryMcMahon, foreign secretary of the British-runGovernment of India and the chief negotiator of theconvention at Simla. It extends for 550 miles (890 km)from Bhutan in the west to 160 miles (260 km) east ofthe great bend of the Brahmaputra River in the east,largely along the crest of the Himalayas