True. An author will only mention a famous person/event assuming his/her audience will be familiar with them/it.
definitions.... *plays jeopardy song*
George Orwells' real name was Eric Arthur Blair, and he wrote under the pseudonym because it was a way to establish a new life and besides, 'Orwell' is more memorable to people that 'Blair.'
A topic is the main idea of a writing. In this case, the topic of the essay is Yellowstone National Park because the essay talks about the national park itself.
