Belief in One God.
Belief in the Law of God (excluding the sacrificial and cleansing laws).
Belief in the Prophets.
The connection between Islam, Christianity and Judaism is that the three religions trace their history to the covenant between God and Abraham.
All three religions track back to Abraham and the general track of revelations by God to the Israelite people.
Considering that these three are religions, not geographic regions, they are not geographically similar. However, all of three of them see the city of Jerusalem as being a holy city.
The question should be " What does Christianity have to do with Jews (or Judaism)?" Judaism is like a tree where Christianity is its branch and Islam is it leaves. Christianity is based on Judaism and Islam is based on Christianity. The major difference between the three is that Judaism doesn't have jesus in it unlike Christianity and Islam.
All three religions teach that there is only one God. The nature of that God is not the same in the three religions, though.
Islam, Judaism and Christianity.
-- Islam -- Judaism -- Christianity
Judaism, Christianity, and Islam have all claimed the Holy Land for themselves.
The three major monotheistic religions are Judaism, Christianity, and Islam. These religions believe in one God and have sacred texts such as the Torah, the Bible, and the Quran.
Three religions with holy sites in the eastern Mediterranean are Christianity (including sites like Jerusalem and Bethlehem), Judaism (with sites such as the Western Wall in Jerusalem), and Islam (with sites like the Dome of the Rock and Al-Aqsa Mosque in Jerusalem).
Yes All God religions; Judaism, Christianity, and Islam; are founded by God the Creator. This explains the many similarities among the three religions ritual worships including fasting, praying, Alms giving, ... etc although practiced differently as well as the similarities in religious morals.
The Bible influenced the three religions of Christianity, Islam and Judaism.