The incompetence of Henry VI is the cause of the outbreak of the Rose war and there was not the only reason for the outbreak of the Rose war, but Henry himself, Personal political activities of Ange Margaret, Richard, Duke, the result of York And the nobility members added a less controllable factor like 100 years of war with Henry inherited from France, an increase in nobility feudalism, and a calm madness of Henry VI.
One of the reasons for the Rose war is that Henry VI was forced to support Edward IV as Henry VI was deemed unsuitable for governance due to mental health problems. Like illegal occupation, this war began with the overthrow of Robert Ballateon's crazy, tyranical king Aerys II Targaryen. Another example, the smaller one is the fight of navy black water. In the battle, Tyrian Lannister ordered the use of magical fire called "wildfire" to destroy the enemy's fleet ordered by Stannis Baratheon. A magical green flame ignites fire and seems to destroy many enemy ships. This is very similar to the real Arab world in Byzantine secret weapons Greek flames was Constantinople's second Arab siege (AD 717-718) which was used by Byzantines for the Arab fleet.
In general, the balance of evidence seems to indicate that Henry VI is the main cause of the Rose war. The incompetence of Henry VI caused a rebellion and what he could not control in virtually meant that the government was full of overly powerful subjects over power. He also exacerbated aristocratic conflicts, exacerbated the tension between them, and created perfect conditions for war. He could not be criticized strongly about his failure in France, but he played a role in the incident by surrendering to Maine and Anjou. The robbery of 1399 also exacerbated all these factors as it encouraged people to believe that God opposed his rule. If Henry VI became the dominant and confident ruler and everyone needed to make him the main factor of the Rose war none of them had any impact on the Rose war event .