Conspiracy theory was given by RP Dutt.

RP Dutt was an Indian economist, writer, and political activist who is best known for his book "The Economic History of India under Early British Rule" and his contribution to the Indian independence movement. He was also a member of the Communist Party of Great Britain.

Conspiracy theory was first introduced by RP Dutt in his book "Fascism and Social Revolution", which was published in 1934.

According to Dutt, conspiracy theory is the belief that major historical events are the result of a secret, coordinated effort by a small group of powerful individuals or organizations.

Dutt argued that conspiracy theories were often used by those in power to deflect attention from their own actions and to maintain their hold on power. He believed that the best way to combat conspiracy theories was through education and awareness, as well as by exposing the true motives of those who spread them.

Today, conspiracy theories continue to be a major force in politics and society, with many people believing in everything from the existence of secret societies to the idea that the moon landing was faked. Despite the efforts of scholars like RP Dutt, conspiracy theories show no signs of disappearing anytime soon.