sino

Not having foreign loan words and using more pure Korean (as opposed to Sino Korean) words are the biggest differences.

China and Japan were fighting and both countries attempted to snatch up Korea as part of the first Sino war.

Interesting...so why is Taoism more prevalent in Sino countries and Confucianism elsewhere?

I think sino-soviet split, which was ideological, not nationalist, led Viet Nam to align with Moscow and Pol Pot with Beijing.

Just do some skimming over the Second Sino-Japanese War and Japanese actions/attitudes/writings towards the Chinese at the time.

Not sure at all what you mean by 'Sino countries'.

This would be a misconception, just like the false notion that North Korea doesn't use Sino-Korean words.

In fairness, the tacit Sino-American currency union has propped up Chinese industry since the Nixon Era.

Indeed, Sino-Russian relations (as they were during the Cold War) are intimately important to world affair.

Meanwhile in the Himalayas, the Sikh Empire attempted an occupation of Tibet but was defeated in the Sino-Sikh war (1841–1842).

Another parallel could be drawn from the current Sino-Russo-American satellite shadowing that has been developed for the past few years.

But this makes barely a blip on the language as a whole since so many basic words in Korean are Sino-Korean.

Indeed, there is no "Sino-Japanese" language.

Just do some skimming over the Second Sino-Japanese War and Japanese actions/attitudes/writings towards the Chinese at the time.

Not sure at all what you mean by 'Sino countries'.

This would be a misconception, just like the false notion that North Korea doesn't use Sino-Korean words.