what factors lead people to criticize their society rather than simply accept it?

if someone could give me examples of this from "canterbury tales" or "on seeing england for the first time" i would really appreciate it!

Consider the title and souce of the following articles. which one is most likely to exhibit a bias? (a) how to roast beef," by the food editor of a magazine (b) americans experiencing greater fatigue than previous generations, " by a harvard researcher (c) "americans' worsening eyesight not related to computer screen usage," by the public relations director of a major computer manufacturer (d) "sharing the burden: a history of cooperation," by a college professor

What is the main idea of this paragraph? asap

What is the correct definition of a canal? a) a machine that picks cotton faster b) a large entity that can carry heavy loads c) a man made ditch filled with water d) a boat that can travel up the current