This something I did for a roleplay I been doing with a friend on mine on Discord for the past two months in which it basically Mobius (from yes the Sonic Universe... Only difference is there only Mobians and no humans and basically world history like in our world is somewhat the same sort've) begins it Space Race in 1968 when the Soviet Union lands on Luna first (they never called it the "Moon" due to confusion) resulting in plenty of nations competing and colonizing Luna making bases and cities. Because of the Russians being the ones who landed on Luna first, US, French (eventually the entire EU when it is created), Brazilians, Indians, Chinese, Japanese, Canadians, and even Pakistan gets a part of Luna for themselves to built cities on either in domed cities or underground.
Also even by 2020 AD, some tech is a bit more ahead but not that advanced per say. For instance there are underground farms on Luna.