Principles and the preamble. topic sentences draw readers’ attention to the main purpose of a piece of writing. it sends the same message as a thesis or claim. write a topic sentence that is clear and direct.

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".

impeachment is when a president is committing treason or doing shading acts while in presidendcy therfor he can be impeached   by congress