In which year?
Without that critical information, it would be impossible to say which out of over 20 conquests/liberations of Jerusalem you are asking about.
There are over 300 Ethnic groups in Indonesia ;)
Over 160 separate ethnic groups.
They were fighting over the holy land of Jerusalem
During the Crusades, three major religious groups were fighting over control of Jerusalem and the Holy Land. Muslims, Christians, and Jews all had significant interests in the region, leading to centuries of conflict and political instability. Jerusalem was considered a holy city by all three groups, making it a central focus of the Crusades.
The West Bank (also called Judea and Samaria) The Gaza Strip The Old district in the City of Jerusalem
Jerusalem known as the holy land Jerusalem known as the holy land
Mostly European countries and countries with a history of colonization by Europeans. Christianity has spread all over the world, and includes people of most ethnic groups. That does not mean that most ethnic groups study Christianity.
The crusades were a holy war made by the christians and the Muslims who were fighting over Jerusalem
The largest ethnic group, Magyar is 90% of Hungary's population Hungary also includes the ethnic groups. Romany, The Serbs, and Slovaks.
There are over 130 ethnic groups in what is loosely called Turkey
over 50% are migration the rest arabs and persians
There are over 300 ethnic groups in Nigeria. The most famous three ethnicities in Nigeria, and the ones with the most political clout are the Hausa Fulani, the Yorubá, and the Igbo.