Why did Nixon decide it was in the nation's best interests to improve relations with China?

During the the Cold War, it can be explained by "the enemy of my enemy is my friend."

Explanation:

to build us up with there advanteges  

Explanation:

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.