The same thing will happen to the dollar that is now happening to all other currencies that are now devalued against the dollar
If the US dollar ceases to be the world's reserve currency, this will lead to a total collapse and collapse of the US economy, which is not far from the collapse of the country.

Why is the status of the world reserve currency so important for the United States? This allows them to print dollars almost uncontrollably – if it causes currency devaluation in other powers, then everything is OK. Every time a state or a person buys a dollar, he takes on part of the US government debt.
Challenging the dollar is the main fear of the United States.
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To war
Capitalism tends toward monopolization, and monopoly ultimately leads to war. The logic of free competition inevitably brings the market to a state where only the last two competitors remain, practically deciding between themselves who should exclusively own the entire market.

At present, trade wars over market ownership are already underway, for example, between the United States and China.
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In the year 2155
Before reaching an Earth-like planet, you need to build a ship capable of flying at speeds above the speed of light. For example, the distance to the closest Earth-like planet in 2023 is more than 300 light-years.

According to some scientists, they only plan to pinpoint an Earth-like planet by 2055.
When will humanity find a second Earth?
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The United States will achieve greater control, access to resources, increased military presence, and political dependence of its allies.
The U.S. will not succeed in annexing Greenland, obtaining territorial concessions from Canada, or achieving a legitimate redrawing of borders, but even without purchasing territory, the U.S. can secure profitable contracts, expanded bases, and exclusive access to natural resources. In the long term, this will lead to a quiet distancing from Washington, an increase in autonomous defense policies in the EU and Canada, as well as a reduced willingness to automatically support the U.S. during crises. In 10-15 years, this could have repercussions in Asia, harm American interests at sea, and weaken the dollar as a 'currency of trust.'

Canada and Denmark are soft allies who publicly express outrage but in practice give way. In doing so, the US itself is pushing the world toward the formula 'Better to have several centers of power than one unpredictable one.'
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