<span>Hello! The labor unions share characteristics with associations of artisans and merchants that we can call "guild". In the medieval times, this kind of corporation was common, and was usefull to tha formation of new professionals. We can see one example of the importance of the guilds when we look at the history of the universities, based on the old guilds. Letter d) craft guilds.</span>
Answer:
You have to know/ understand that you're in a safe place
In this essay, Twain claims that knowledge changes the way you see the river. At first sight, you will get enchanted with the beauty and charm but the more you look, the less impressed you will become. You will begin to see the river as source of information (whether this information is from the water current, the banks of the river or the hazards that you meet while sailing there).
This perspective can also be applied to life. When your young, you only see the beauty and charm in life, however, as you grow up, you start to develop knowledge about life, you start to see the opportunities and sacrifices and the way you see your life changes.