well said pasta perhaps sam is stuck and does not have any help. Besides everyone gets help with homework from time to time.
erusalem is of interest to many Christians because it is the place where some key events in Jesus' life occurred. It is also a place that will have significance in the future. It has always been of significance to God and to the Jews and as such is important to Christians. As many people like to visit and see for themselves places where people important to them have lived, so is Jerusalem to Christians. It is interesting to see and learn about a city of which you read so much. It isn't the main event, though for Christians and there are no requirements to make a pilgrimage there.
It is the place where Christianity began at Pentecost and it is at Antioch where the term 'Christian' was first applie
http://en.wikipedia.org/wiki/Jerusalem