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