Share This Article 1. Sometime around 1781 James Monroe named his estate this. Brookwood Mount Pleasant Montpelier Long Branch 2. On 10 April 1864 this man declared himself Emperor of Mexico. Archduke Maximilian of Austria Don Pedro II of Brazil Joseph Napoleon III of France Ferdinand VII of Spain 3. The so-called “July Plot” to kill Hitler is often referred to by this code name. Operation Valkyrie Operation Wolfkill Operation Savior Operation Downfall Loading …