"If India and China develop friendship by rising above their petty differences, they could rule the world with their ever-growing economic strength," Gadkari said.
The two neighbours should resolve the contentious boundary issue by demarcating the territory through mutual understanding and should work together for economic development of the South East Asia region, he said.
"The BJP will never compromise with the territorial integrity of the country," he said in a programme that officially concluded the Sahid Shradhanjali Yatra.
The Yatra, organised by the BJP's youth wing BJYM to pay homage to the martyrs on completion of 50 years of the 1962 Sino-Indian war, had been flagged off by Gadkari on October 18 and culminated at Bumla, the last Indian post along China border, in Arunachal Pradesh on October 20.
Gadkari, on a day-long visit to the state along with party vice-president and Guwahati MP Bijoya Chakrovarty, paid homage to the martyrs of the Sino-Indian war offering flowers and lighting lamps.
Taking a dig at the Congress, Gadkari alleged that despite supreme sacrifices made by over 4000 army personnel in the 1962 war, the party in power at the state and the Centre failed to recognise their contribution to the nation and did not bother to remember them.
On the visit of a BJP delegation led by Gadkari to China in January last year, the party president said, "We had held meetings with various representatives of that country including the premier and discussed various issues of mutual interest including the boundary issue."