<span>The Incas, who were founded in 1438, was the Empire to achieve this.</span>
Signs point to North Korea unilaterally launching the invasion. It was not helpful for the USSR and was at a very bad time for the PRC since the war immediately shut down plans to invade Taiwan.
The U.S., especially after Chinese troops entered the war, viewed it as a united and aggressive communist bloc brashly taking over one more country and likely to try more if not resisted. US defense spending shot back up to wartime levels (though far from the WWII peak) and stayed there.
China also viewed it as a feeler for aggression that would go further if not resisted. Both countries were overinterpreting local issues as global ones.
The dramatic reverses were all in the first year, followed by two years of stalemate before the armistice.
In Southwest Asia, WWI forced the Ottoman Empire to disperse and lose all of its land but Turkey, who modernized shortly after. Republics were formed and different people took over, mainly men with military positions.
This is an opinion question, but I believe that it is possible to seize political control over a country without oppressing the country's people. However, history has shown otherwise (Nazi Germany, British Empire) but we can use past mistakes to improve our future world.
<span>The role of Mexico gave the Radical Republicans a veto-proof majority in Congress. Hope this helps :)</span>
