What changed in the Holy Land between 380 CE and 550 CE? How might this have affected relationships between Jewish people, Roman Catholic Christians, and Eastern Orthodox Christians?

The crusades had started during this time period. The Romans wanted to take the Holy Land from the Jewish, because in both of their religions that land was important. So, the Europeans wore crosses on their chests and rammed into the Holy Land on their horses. There were eight major crusades that happened, but there were also many minor ones. It went back and forth; one time the Jewish had the land and another the Christians.