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