Democratic (socialist/proto-fascist) President Wilson issues an ultimatum to Johann Heinrich von Bernstorff, Ambassador from the Empire of Germany, threatening to break diplomatic relations if unrestricted submarine warfare continues against allied trans-Atlantic shipping.
[restored 6/11/2022]
Subsequent Events:
References:
Calvin D. Linton, ed., The Bicentennial Almanac: 200 Years of America, 1776-1976, (Nashville, Tennessee: Thomas Nelson, 1975), 288.