Here are some one liners...
The Contest to Nourish Man -- Unseasonable weather has devastated crops so France has a contest to find a new food to feed the masses. The potato wins, but it's illegal to grow potatoes in France.
The Privileges of a Princess, a King and a President -- Marie Antoinette accepts a proposal of marriage from the Prince of France. I talk about her devotion to the institution of the monarchy even though she didn't particularly like court politics.
The Virginia Assembly is Hereby Dissolved -- Massachusetts asks for colonial support during the British occupation of Boston. The Virginia legislature passes laws in support and is dissolved in retaliation. I talk about how this turns into a personal vendetta for Samuel Adams.