Afire that starts without a flame is called?

i'm a few years late but this is for everyone new reading this, it's actually called a Spontaneous Combustion

Explanation:

during my time working on a ranch in texas, we had multiple situations where haybales would catch fire without there being an actual flame to start it.

answer; i believe the correct answer is ( a expression) plz check first.good luck

answer; i believe the correct answer to be the parents and primary groups bears most of the responsibility for socialization in the cooley's theory;