Answer:
World War I was the deadliest conflict until that point in human history, claiming tens of millions of casualties on all sides.
Under President Woodrow Wilson, the United States remained neutral until 1917 and then entered the war on the side of the Allied powers (the United Kingdom, France, and Russia).
The experience of World War I had a major impact on US domestic politics, culture, and society. Women achieved the right to vote, while other groups of American citizens were subject to systematic repression.
Step-by-step explanation: