Why did Charles' personal rule come to an end?

Charles I's personal rule, which lasted from 1629 to 1640, came to an end primarily due to increasing discontent among his subjects over his authoritarian governance and financial policies. His decision to govern without Parliament led to widespread resentment, especially when he imposed taxes and enforced religious uniformity. The situation escalated with the First Bishops' War against Scotland, which forced him to call Parliament in 1640 to raise funds, ultimately leading to a power struggle and the onset of the English Civil War. This conflict marked the beginning of a significant challenge to his authority, culminating in his eventual downfall.