The Communists in the State Department speech was given on February 9th 1950
All of these could be considered an "author's purpose". An author is technically anyone who writes anything, therefore the purpose of writing is theoretically limitless. If you have to choose one of these, however, it would be "to remind".
In general, the core of a realistic novel is "<span>conflict" since this is what oftentimes captivates the readers most, but it could be other things as well. </span>