[inglor_cz]

"some industrial capacity in the early 20th isn't saying much"

Quite a lot of industrial capacity since the early 19th. Czech Lands had a lot of black coal and water, so heavy industry started flourishing early, once steam engines were available. The first industrial ironworks in Ostrava started producing steel in 1828; the heavy ingots back then had to be transported by horses, because first railway only reached the region a decade later.

" for most of it's history, it was CzechoSLOVAKIA"

Nope, bad history. Czechoslovakia was a relatively short-lived country, only extant for three generations. The Slovaks spent almost a millennium, from approximately 1000 to 1918, as a Hungarian de-facto colony, Felvidék (the Upper Land); subject of a different kingdom. The Czech crown lands never extended to Slovakia. The only unitary state was the 20th century republic.