Donald Trump’s administration is exerting heavy pressure on Ukraine, demanding that it agree to the American-Russian peace plan by Thanksgiving.
Source: Financial Times (FT), citing senior Ukrainian officials and individuals familiar with the negotiations
Details: According to the FT’s sources, the White House has set strict deadlines for the negotiation process, insisting that Ukrainian President Volodymyr Zelenskyy agree to the terms of the deal by Thanksgiving, which is celebrated in the United States on 27 November.
When I search the Wikipedia list of sovereign states, there is not a single other country that uses “united states” in their English name on that list. So at the moment unitedstatesians would be fine to use from that side.
Which countries were you thinking off? Closest I could find are the United Mexican States, but there they have the identify in the middle.