Manufacturing in slovakia became important

after the communists assumed power
when agriculture faltered
when the mixed economy failed
after the magyars assumed power

after the Communists assumed power

Explanation:

As before the independence the Slovakia had state industries and they after the 21st century produced an effective system of the industrial system and that produced the substantial parts of the GDP, and these industries included the textile, auto manufacturing units, and the textiles, etc. And they alsoprdi8ed the military equipment for exports and was due to the legacy of the communist era of industrialization.

980 is the correct answer