Question

Why was Parliament the reason of the civil war​

Answer 1

They where fighting over who should control the army.

Step-by-step explanation:

I looked it up

Answer 2

The struggle between King Charles I and his Westminster Parliament over who should control the army needed to crush the Irish insurrection in turn provoked the outbreak of civil war in England (August 1642).

This should be it, Have a great day bud. BYE :D