Even if there is a currency, no one will abandon the dollar, the further dominance of the dollar depends on the United States itself.
Russia, China, India and other countries accept the dollar and do not plan to abandon it 100%, settlements are also carried out in terms of dollars. The well-being of the dollar depends on the United States itself, if they act from a position of strength, then the rejection of the dollar will accelerate and a new currency will be issued. The BRICS countries will be more active in expanding trade in national currencies, as the use of the dollar as a sanctions stick has undermined confidence in it

Most likely, the BRICS will have to abandon India. Since she does not like to trade for the yuan, she does not want to give up the dollar. Because of this, the decisions of the BRICS groups, including the creation of a currency, are very difficult, at least that's how it is presented in the news. If the BRICS currency is backed by real resources, including land and rare earth metals, Russia will regret it in the future. Because it will not be able to compete with China, which will eventually be able to demand land in exchange for currency.
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Yes, due to Chinese restrictions on the trade of rare earth metals.
China controls rare earth elements that are necessary for almost all advanced technologies and are almost entirely produced in China. It accounts for 70% of their global production and, more importantly, over 90% of their processing. Thus, it can respond to restrictions from the USA and the EU. Therefore, negotiations will have to be made with China. Chinese media note that the supply of many important medicines in the USA is also almost entirely controlled by China.

China itself is very much dependent on world trade. And foreign trade is a constant leash for China.
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They rearm and improve their weapons
The United States has been an empire since 1947. Empires past and present must wage war to ensure their own existence.

War is a very important and lucrative part of the US economy and politics.
Why does America fight so many wars?
Why does the US start wars around the world and claim victories without having won anywhere?
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Need to improve the quality of education
The fact is that after reading books, an educated person becomes the worst buyer: he does not become a slave to advertising, he buys less new smartphones and cars, starting to prefer Mozart and Shakespeare to them.

To make people easier to manage, they need to wean a lot of thinking. The thinking of the average citizen should remain at the level of thinking of a teenager.
How people become consumers
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