To a large extent, British India and independent India helped China to re-establish and consolidate its hold on Tibet, particularly in view of Tibet having enjoyed de-facto independent status from 1913 to 1951.
It must not be forgotten that India fecilitated the Tibetan delegation to proceed through India Peking to formally accept to be an autonomus part of China,even though the seventeen-point agreement signed in May 1951 has remained controversial, as something done under duress. India's large heartedness and its endeavors to befriend China did not end there.
As a gesture of goodwill, the Panchsheel Agreement of 1954 was a classic example of India's one-sided generosity and diplomatic naivety one that resulted in its giving away all rights and privileges and significantly, in ending India's presence in Tibet without the country gaining anything as a quid pro quo.
Although at times, there has been friction on the border issue, the maturity and statesmanship of the leaders of both nations have ensured that there problems were resolved in a peaceful manner through dialogue and diplomatic exchange, as has been demonstrated during the recent stand-off at Doklam.
When was the Seventeen-point Agreement signed?