Crash Course is produced and directed by Stan Muller. Our script supervisor is Danica Johnson. The show is written by my high school history teacher, Raoul Meyer, and myself. We're ably interned by Meredith Danko. And our graphics team is Thought Bubble. Last week's Phrase of the Week was the TARDIS, so you can stop suggesting that now. If you'd like to suggest future Phrases of the Week or guess at this week's, you can do so in comments, where you can also ask questions about today's video that will be answered by our team of historians.