Explanation:
It proved to be the key to deciphering Egyptian hieroglyphs mensing it opened an opportunity for the first time into ancient Egyptian history
Originally, electors cast two ballots for president and whoever took second place in the tabulation became vice president. Starting in 1804, the president and vice president were elected on separate ballots as specified in the Twelfth Amendment to the United States Constitution which was adopted in that year.
The answer would be the successful overthrow by a European power of a foreign local government. This is on account of the Ethiopian ruler Tewodros II submitted suicide when he understood he'd lost the last skirmish of the crusade, which was mounted by Britain to free British and other European prisoners seized by Tewodros.