On May 29, 1453, after an Ottoman army stormed Constantinople, Mehmed triumphantly entered the Hagia Sophia<span>, which would become the city's </span>leading <span>mosque. Emperor Constantine XI died in battle that day, and the decline and fall of the Byzantine Empire was complete.</span>
The answer would be D because Pre-Columbian civilizations didn't have any domesticated animals such as cows, chickens, and horses. This fact limited the accessibility to meat for the Pre-Columbian civilizations.
<span> Military spending that began in 1940 to bolster the defense effort gave the nation’s economy the boost it needed, and millions of unemployed Americans returned to work to make the weapons of war needed to protect the United States
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Answer:
Correct answer is (D) destroy the Concert of Europe and leave Russia without allies
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Explanation:
Option A is not correct as this two principalities were unified just a couple of years later into Romania.
Option B is not correct as this war didn't affected Estonia.
C is not correct as quite on the contrary this was one of the crisis that undermined the Concert of France.
D is correct as European forces, especially Austria, Britain and France were afraid that Russian influence and conquering of Constantinople would totally change the balance of powers.