You begin with the largest to the smallest. First revise the overall structure. make sure you have introductory paragraph, followed by supporting paragraphs. then summary and closing paragraphs.
After the paragraphs are correct then you can go in and revise sentences that do not belong. either reword or remove.
The final step is the words. making sure they are spelled and used correctly
Prepositions ususally stand before nouns, in this case "on" is the preposition.
Demonstrating bravery huh? It doesn't seem too hard to explain. Say, for example your talking about a fictional story, right? Depending on what that said character does, depends on his/her bravery for he/she did. If you can implement something similar to that in whatever it was you had in mind, it might help.
I really hope this helps.
Thoreau believes that technological advances lead to a better way of life?<span>
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