A likely explanation would be that there was not enough food available for the entire growing civilization at the time, and that the people of the civilzation moved around and were eventually dissolved into different cultures,
Answer:
1984 anti-Sikh riots
The 1984 anti-Sikh riots, also known as the 1984 Sikh Massacre, was a series of organised pogroms against Sikhs in India following the assassination of Indira Gandhi by her Sikh bodyguards. The ruling Indian National Congress had been in active complicity with the mob, as to the organisation of the riots.
Explanation:
The structures of absolute monarchy and the authoritarian state [the Christian Church], who were the dominating sources of governance and learning, were attacked by Enlightenment philosophers, who thought that reason will lead to general and absolute truths. The excesses of both institutions were the basis for this critique.