Origins of the war
Like most wars, the War of the Three Kingdoms was not started over one single issue, but instead of many different one. However, for this specific topic, complications between divine ruler ship and the crown come to head with the members of parliament, both English and Scottish. Charles I, much like his father James I would see himself as the top of the legal system, unlike his father, he was unwilling to come to terms with the notion that Parliament was also necessary. By encouraging the act of thorough, Charles would hope a more Arminian styled faith would ease Parliaments grip on society, and allow him to get what he saw his right. Seeing this as a popish plot, Parliament led by John Pym would look to curb his growing power, but were shut out by Charles when they needed return if they where to fund Charles' campaign against the Scots.
While sharing the same king as England, the Scottish would worship a different faith and would experience radically different culture from their southern neighbours. Being Calvinist the saw the King as a necessary tool of government, but by no means as religiously significant like the Catholics or Anglicans. Instead the saw the individual as important, and established the Scottish Kirk, a religious head with the top being a committee willing to debate what is necessary in Scotland. To Charles and the Stuart dynasty, Scotland was in theory their home, however by Charles' reign they where seen as foreign and downright dangerous. With a history of aggression to England, Parliament at times shared this view, however there where Calvinists in Parliament, and the two peoples could come to terms. However, Charles wished to unify his kingdoms more so then ever before, this included Ireland and Scotland sharing the Anglican-Arminian faith. By pushing the book of common prayer into Scotland, a violent uprising would occur in reaction. While few individuals where killed, this would start the Scottish invasion south in what would become known as the Bishops wars. An invasion from the Scottish Covenanters would see victory over English forces, and through the Treaty of Ripon would have England supply them with reimbursement for their efforts. With Charles I defeated he had no where to turn but to Parliament, where he would be forced to begin Long Parliament.
Upon its creation, Parliament would ensure that it could not simply be dismissed until it decided to do so, and immediately began to look to resolve issues. However things quickly led to complications, with Parliament demanding the execution of the Earl of Stafford, a man seen as promoting Thorough in England. While allowing it after the insistence of Stafford himself, Charles would no longer be able to cooperate with Parliament effectively. Leading to the forming of two sides of Royalists (Cavaliers) and Parliamentarians (Roundheads) the conflict would break into all out war. However it should be noted that there was enormous stress from both sides, with each seeing King as legitimate but possibly mistaken, and none would guess the wars conclusion.
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