1) In Aztec mythology, Quetzalcoatl is a prominent deity often depicted as a feathered serpent. He is associated with creation, fertility, and wind, and is considered a cultural hero and patron of priests and rulers. The arrival of Spanish conquistadors was interpreted by some as the return of Quetzalcoatl.

2) Ryan Reynolds is a Canadian actor, producer, and entrepreneur known for his roles in films such as "Deadpool," "The Proposal," and "Detective Pikachu." He has gained recognition for his comedic timing and charismatic performances on-screen.

3) The development of the microprocessor by Intel in 1971 paved the way for the modern computer and led to the exponential growth of computing power.

4) In Hindu mythology, the Bhagavad Gita is a sacred text that contains a conversation between Prince Arjuna and the god Krishna, who serves as his charioteer. It delves into philosophical and moral dilemmas and provides guidance on duty, righteousness, and the path to spiritual enlightenment.