Answer: Signed a truce with Saladin allowing Christian pilgrims to access holy sites
Explanation:
Richard the Lionheart was a King of England who conducted Crusades against Saladin of the Ayyubid Dynasty which had taken control of much land in the Middle east which Christians held dear.
Richard scored a significant number of victories against Saladin but eventually had to sue for peace due to certain factors. The Treaty of Jaffa was this peace and represented a truce that allowed Christians access to holly sites such as Jerusalem.