The United States cricket team earned one-day international status for the first time in their 54-year history after ensuring a top-four finish in the International Cricket Council's World Cricket League Division 2.
The USA beat Hong Kong - qualifiers for the last two World T20 competitions - by 84 runs in Windhoek, Namibia.
Xavier Marshall, who played seven Tests for West Indies before switching allegiance, hit a century for USA, who become one of 20 nations to hold ODI status.
The USA's only previous experience of playing top-level international cricket came in the 2004 Champions Trophy, but they are now able to qualify for the 2023 World Cup in India.
They will play in a seven-team league - consisting of Scotland, United Arab Emirates, Nepal, Oman, plus two others - over the next three years with the top three progressing to a final qualifier tournament in 2022.