Answer:
well for starters no one is really in charge of the government in the us for now.
Explanation:
First of all because the US overment does not run off of dictatorship and instead runs of a Triparite system based off of branches including the senate, the executive branch, and the Legeslative branch. this derives from both the ancient roman Replublic system and from the ancient Greeks. so even if someone tried to take charge of the us government there would have to be a massive debate between the Triparite system and the us citizens.
They contributed to World War 1 through the assassination of Archduke Franz Ferdinand. The Black Hand was part of a Pan-Slavist movement in which they wanted to unite territories of South Slave that had been annexed by Austria-Hungry. Hopefully this helps.
i believe it was to establish the concert of europe to ensure someone like Napoleon wouldn;t ever arise to power again