um i dont get the question
Answer:
The D-Day invasion took years of planning.
Initially, a plan called “Operation Sledgehammer” called for an Allied invasion of ports in northwest France as early as 1943, but Roosevelt and Churchill decided to invade Northern Africa first and attack Europe's “soft underbelly” through Italy.Mar 12, 2019
Explanation:
It would be "China" that <span>John Hay negotiated with to establish the open door policy, since trading with China greatly benefitted the United States (and China as well to some extent). </span>