Why was the city of Jericho in a state of siege?

The city of Jericho was in a state of siege primarily due to the Israelite conquest described in the biblical narrative of the Book of Joshua. The Israelites, led by Joshua, were commanded by God to take possession of the Promised Land, and Jericho was one of the first cities they encountered. The siege culminated in the famous event where the Israelites marched around the city for seven days, after which the walls collapsed, allowing them to capture the city. This event symbolizes the Israelites' faith and obedience to God's instructions.