There have been multiple uprisings of Palestinians in protest of Israeli occupation and domination. However, the major Palestinian uprisings have been called "Intifada's" which is an Arabic word that means shaking off. The first occurred in the early 90s and the second occurred in the early 2000s.
I believe the answer is the first one
1.) its about "generational change" years we are able to enhance out studies and engange to more advance learning in discoveries
2.) socio-economic and environmental influences probabbly could affect (there are more and further explanation bout this)
3.) basically "past ideas" are the our main root of the principles and manners today so these ideas are not exactly different it is just innovated and enhanced
The source was the land that they owned that they could control the peasants in their feudal system.