What events abroad and in the united states caused concern among war-weary americans?

You did not state a specific time period about which you're interested. However, in general the war-weary Americans were concerned with any event in Europe that seemed to destabilize the whole region. They were concerned with events like these because they had the potential to seriously influence the peace in America, not only in Europe.

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.

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