The lord would provide to the vassal land from which they could make money from and in return the vassal would contribute troops to the lords army. Sometimes vassals would also pay a small fee of grain or various other goods as a sort of tax for the land.
To detect bias you need to the character opinion and then go from there to see how there opinion be comes bias
Lyndon Johnson--Lyndon Johnson was the president during the creation of the Great Society programs.
Lyndon Johnson took over after the assassination of JFK. He continued the goals of JFK's administration in providing for the poor. Johnson created the Great Society program which provided housing and medical assistance for the poor as well as beginning welfare programs.