Geopolitical Paradigm Over The Coming Century?

The United States allied with the USSR (reformed on a social democratic model) during the last phase of the space conquest (colonization of the moons of Jupiter and exploration of Saturn) and of the Second Korean War at the end of the years 90 (the president was an ambitious Democratic candidate under the name of Donald D Trump), but the increase in tensions resulting from the alliance between Europe and Quebec and a serious economic and social crisis in the 2020s pushed the the United States and the USSR in a lightning war against Europe.
This war took a bad turn for the allies whose military capabilities were neutralized by Sino-European cybernetic offensives. defeated the united states suffered various foreign influences resulting in a breakup of the country.

nevertheless the American heritage is still as strong considering that the Martian state and several other colonies still claim to be from the old United States of America and persists in continuing their cultural and social traditions.
unlike Europe and China, which were almost reduced to nothing during their Fourth World War.