This is the 12518th most frequent Russian word.
коллапсу
"Коллапсу" translates to "collapse" in English, referring to a breakdown or failure of a system or structure.
In this sentence, 'коллапсу' is used in the dative case to indicate the direction towards which the economy was heading: collapse.
Экономика страны стремительно приближалась к коллапсу.
The country's economy was quickly approaching collapse.
Here, 'коллапса' is in the genitive case, representing possession or attribution, referring to the collapse belonging to the star.
Учёные изучают причины коллапса звезды.
Scientists are studying the causes of the star's collapse.
In this example, 'коллапс' is in the nominative case, acting as the subject of prevention.