Simplify the following text for a Grade 15 native English-speaking person.
Original: The conflict became stronger when the modern state of Israel was created , on land that the Jewish people saw as their historical homeland , but the Pan-Arab movement saw as belonging to the Palestinians , whether Muslim , Christian , Druze or other ( and in the Pan-Islamic context , in territory regarded as Muslim lands ) .
Simplified: Territory regarded by the Jewish people as their historical homeland is regarded by the Pan-Arab movement as historically and presently belonging to the Palestinian Arabs , and in the Pan-Islamic context , in territory regarded as Muslim lands .