For Judaism: The holy land for Judaism is Israel (see Deuteronomy 11:11-12), and the holy city is Jerusalem. See also the Related Links.
Jerusalem is the center of Judaism. It is important to Jews because it was chosen by God (Zechariah 3:2). It was the site of the Akeidah (Binding of Isaac, in Genesis ch.22) and was later the seat of the Davidic Kings, when King David, Israel's greatest king, founded the dynasty that ruled Judah for much of its history, making Jerusalem the capital of the United Kingdom of Israel during his reign and that of his son, King Solomon.
Most importantly, it was the location of the First and Second Temples, where offerings were made to God and where His presence dwelt in the Holy of Holies (1 Kings ch.8) and was manifested in a number of miracles (Mishna, Avot ch.5).
Jerusalem is called the holy city by the prophets (Isaiah 52:1). It was where Jews would go three times a year to celebrate the holiest festivals (Deuteronomy ch.16). Even after the destruction of the Temple, the Temple Mount and adjacent Western ("Wailing") Wall, which still stands, is the holiest site in Judaism. It is hoped and prophesied (Ezekiel ch.40-44) that one day a third temple will be rebuilt in Jerusalem and that the Messiah will come to it.
Jerusalem has become representative of the connection with the Divine. Jerusalem is also seen as the source of Divine Law, as demonstrated in many Jewish prayers: "Ki miTziyon tetze Torah udvar Hashem miYerushalayim - From Zion comes the Torah and the Word of God from Jerusalem" (Isaiah 2:3). Jerusalem is also representative of the Redemption of the Jewish people from their physical and spiritual exile, because this exile causes the melancholy that the Jewish people experience by being apart from God's presence. The Redemption, which Jews believe will be brought by the Messiah, will result in the Jewish people returning to Jerusalem.
According to ancient Hebrew tradition, Jerusalem is the site where God took the very earth from which Adam, the first man, was formed (midrash Rabbah 14:8). Read Genesis carefully; Adam was not created in the garden of Eden; he was taken there. Jerusalem, because it is the first place on Earth where the spirit of God dwelt, is considered a direct link to God.
Judaism is the oldest monotheistic religion and Jerusalem has been its only holy site for over 3000 years. King Solomon's Temple in Jerusalem was destroyed by invading Babylonians, and rebuilt at the same site (known as the Temple Mount) about 2500 years ago. It was then destroyed again when the Romans conquered Judea about 2000 years ago, killing a million Jews. All Jews who value their heritage feel ties to Jerusalem and the holy land, where so many of their people struggled for the freedom to practice Judaism. At the same time, Jews believe that all people should be welcome there, regardless of faith.
Jerusalem is the eternal Jewish city, and a symbol of a future time of peace. Jerusalem is also the focal point of prayer of the Jews. When they pray, wherever they are, they face towards Jerusalem (Talmud, Berakhot 30a), with love and longing. The sentiment is aptly expressed in Psalm 137: "By the waters of Babylon, there we sat and wept as we remembered Zion....If I forget you, Jerusalem, let my right hand forget its wisdom." For thousands of years we remembered our exile and prayed for its end. Now at least we can do so from "up close."
It is Jerusalem
They fought because the Muslims had control of Jerusalem, the most important city to the Holy Roman Empire. To get Jerusalem back under the control of it, the crusaders started the Crusades, or holy wars.
Jerusalem
Muslims don't worship the kabba but the kabba is the direction of prayer for Muslims after Jerusalem was the direction of prayer. first Jerusalem was the direction of prayer for Muslim then a verse in the quran ordered Muslims to switch their direction of prayer from Jerusalem to the kabba.
There are several Christian holy sites in Jerusalem. Probably the most important is the Church of the Holy Sepulchre, but there is also the Via Dolorossa, Golgotha, Mount Zion, Tomb of the Virgin, Grotto of Gethsemane, the Chapel of the Ascension, and the Armenian Patriarchate in Jerusalem at St. James Cathedral.There are two major important Islamic holy sites in Jerusalem, Masjid al-Aqsa and the Dome of the Rock Shrine.The Dome of the Rock Shrine covers the area of the Former Jewish Temple and therefore has tangential significance to Christianity, but Christians do not usually go there when they make pilgrimages to Jerusalem. Otherwise, the two religions share no holy sites in Jerusalem.
Land (primarily the holy land and Jerusalem); Money; It wasn't all economically and territorially motivated, Jerusalem is important in a religious context.
The First Crusade in 1099 succeeded in capturing Jerusalem and driving the Muslims out. The Crusaders established the Kingdom of Jerusalem after their victory.
The "holy cities" of Judaism and Christianity is Jerusalem. Jerusalem is important to Christians because it is the city in which Jesus was born. Jerusalem is important to Jews because of the great temple that was built in Jerusalem. The "holy city" of Islam is Mecca, where the Islamic people do their "pilgrimage".
The muslims
Mecca and Jerusalem are holy cities for Muslims.
Jerusalem - Sacred to Muslims, Jews, and Christians.
Mecca and Yetrib (now commonly called Medina). Additionally, most Muslims also hold that Jerusalem is also a holy Muslim city.