>>/20723/
The way I see it, and mind you I am in the absolute minority, the issues started in the 18th/19th century, when a bunch of chuds decided to resurrect a dead language (known as czech language) just to be alternative on the internet, called the czech national revival. So instead of most people speaking german (yes farmers spoke some sort of czech, but people in cities did not) they started to go all autistic with this movement, making up new words, firebombing the opressors etc etc. Of course the Habsburgs didn't like them stirring up shit, so there was bad blood till the end of the 19th century and when WW1 ended, the czech leaders were looking to split from Austria because they were the big bullies.
And to do that, they pretended there was some sort of "Czechoslovak" nation being opressed. There is no such thing as czechoslovak nation and never was, but it was good to appear bigger when matters were decided in 1918.

In the interwar period, we spent metric shit ton of money on Slovakia. It was a desolate shithole with no infrastructure, no schools, no hospitals, no clean water. We taught them how to read, how to write, built factories, roads, railways, everything. Mind you Czech parts had GDP of 90% of Austria, while slovakia had like 5%.

Of course then came WW2, the slovaks returned all our good deeds by backstabbing us. WW2 ended and since czechoslovakia was still a thing, Yalta decided to throw us to Stalin on a silver platter, then came the 40 years of russian destruction, both physical and mental.