All the given statements about Nathu la Pass are correct. Nathu Lais a mountain pass in the Himalayas in East Sikkim district. It connects the Indian state of Sikkim with China's Tibet AutonomousRegion. The pass, at 4,310 m (14,140 ft) above mean sea level,is an offshoot of the ancient Silk Route. Nathu means "listeningears" and La means "pass" in Tibetan. Sealed by India after the1962 Sino-Indian War, it was reopened in 2006(i.e. after 44 years)following numerous bilateral trade agreements.