In the time of the Crusades, the elite soldiers, the Knights Templars, were executed by King Philip of France on October 13, 1307 C.E. on a Friday. That is how we get the superstition of Friday the 13th.
The Crusades 1050-1320C.E., a war led by the Catholic Church to take back the Holy Land (Israel) from Muslim rule. Members of the Catholic Church were defeated. Rome became headquarters of the Catholic Church, thus the Vatican started to be built.
The Holy Land (Israel) is home to the Judeo- Christian worldview, and only to Mohammed’s night vision in Jerusalem.
Today, ignorant people blame the Jews for taking back the Holy Land, and say, it is not their right. Why?