Institutions such as the religion as well as politics do play a role in having beliefs as they would serve as guidelines for people on what to believe in. For instance for religion, mostly people do rely on the church teachings and those then are the ones being followed. In politics, people then do rely on the officials and give their trust in regard to having a good society.
Foods that would be good for your knees would be salmon,tuna,sardines,oatmeal,walnuts,and kale.
Identity is "the sense of one's self".
The search for Identity begins at around 12-20 years old.
Hope this helps!!
The last one because empathy is when you feel bad for another person.