You could write about the Taiping Rebellion. Basically what happened was a Chinese dude name Hong Xiuquan decided that he was Jesus's young brother, started his own religion and tried to take over China to create the Taiping Heavenly Kingdom.
No they aren't proper to use in writing class they are considered slang. It would show your teacher that your not interested in sounding educated and proper.
Hope this helps!
C is the right one. Unlike quotations or paraphrased ideas, information that's considered "common knowledge" doesn't need to be cited. "Common knowledge" is information that's considered widely known or easily verified.
