Where does “మూలకారణము” come from?

మూలకారణము (Telugu) comes from Telugu కారణము, from Telugu -ము — The suffix of the first case in some neuter...

మూలకారణము (Telugu): the main reason or cause of the problem

Definitions

మూలకారణము traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Telugu	కారణము	cause, reason, ground, origin; motive, object
2	Telugu	-ము	The suffix of the first case in some neuter...

Step	Language	Word	Meaning
1	Telugu	మూల	corner; angle; a point of the compass, a quarter...
2	Sanskrit	मूल	root; radish; base, foundation