1) They can trace their roots back to the Middle East.
2) The heart of the dispute is who should have control over the lands currently. A lot of nations and religions have religious connections to Jerusalem, like Islam.
3) They believe that East Israel is Palestinian territory, not Israel's.
4) Judaism, Christianity, and Islam.
5) Israel and Palestine and UN peace keepers. There is a constant war in Jerusalem and in Palestine.
6)
7) The United States has not done anything much, but had voted on keeping Palestine and Israel seperate.