Thomas Becket was a close friend of King Henry II and served as Archbishop of Canterbury. However, their relationship broke down over issues of church authority versus royal control. Becket defended church rights against the king's attempts to influence church decisions.

Source A: Excerpt from a medieval chronicle

'Becket's refusal to bow to royal demands was seen as a challenge to the king's authority, leading to growing tensions.' Provenance: 13th-century historical account.

In 1170, four knights believed they were acting on King Henry II's orders when they murdered Becket in Canterbury Cathedral. This event shocked England and Europe, as Becket was seen as a martyr.

Source B: A letter from a contemporary monk

'The killing of Becket was a tragic act that turned him into a saint and martyr, inspiring many to see him as a symbol of religious resistance.' Provenance: 12th-century religious correspondence.

After Becket's death, he was canonized as a saint in 1173, and his shrine in Canterbury became a major pilgrimage site, which brought wealth and influence to the Church.

Source C: A modern historian's view

'Becket's martyrdom and canonization reinforced the power of the Church and demonstrated the danger of challenging religious authority.'

The conflict between Thomas Becket and King Henry II, his murder, and subsequent martyrdom had profound effects on the relationship between the Church and the monarchy, shaping medieval religious and political history.

Question: Write a paragraph summarizing the cause and consequence of Becket's conflict and martyrdom.