Why did conflict arise between Henry Il and Thomas Becket?

Conflict arose between Henry II and Thomas Becket primarily due to their differing views on the separation of church and state. Henry II wanted to assert his authority over the church by having more control over church appointments and policies, while Becket, as Archbishop of Canterbury, argued for the independence and autonomy of the church from the interference of the crown.

Additionally, there were disagreements over the jurisdiction of ecclesiastical courts and the extent of royal power over the clergy. Becket's defense of the church's rights and privileges clashed with Henry's desire for greater control and authority.

The conflict escalated when Becket excommunicated some of Henry's supporters, leading to a breakdown in their relationship and ultimately to Becket's murder in 1170. Henry II was not directly involved in Becket's assassination, but he was widely believed to have contributed to the climate of hostility towards him.