Buddhism and Hinduism in India begin to emerge between 500 and 300 years BC with the kingdom of the Mahajanapadas, who created books called Upanishads, these are texts that form the theoretical basis of classical Hinduism
The correct answer is more than 2000 years ago approximately 2700 years ago
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This historian would be using the skill of "comparative analysis," since he or she is comparing a wide variety of sources to draw a conclusion between them as a group.
On May 29, 1453, after an Ottoman army stormed Constantinople, Mehmed triumphantly entered the Hagia Sophia, which would become the city's leading mosque. Emperor Constantine XI died in battle that day, and the decline and fall of the Byzantine Empire was complete.