The united states began a policy of under president nixon, meaning that the united states and china were drawing diplomatically closer.

The US started an open-trade policy or the Open-Door policy under President Nixon. This policy ensured that all nations had equal trading privileges with China. It also meant that goods were traded freely between the US and China. The event occurred when President Nixon visited China in 1972. It was an important occasion because the US was looking some ways to improve its relations with a Communist country during the Cold War. 

Ithink it’s a : ) good luck on whatever