idk but it's about history
Answer:
He is also known for his discovery of the photoelectric effect, for which he won the Nobel Prize for Physics in 1921. Einstein developed a theory of special and general relativity, which helped to complicate and expand upon theories that had been put forth by Isaac Newton over 200 years prior.
Explanation:
I think you forgot to give the options along with the question. I am answering the question based on my research and knowledge. <span>In a free enterprise system, government address public problems through policy to ensure that citizen's needs are met and protected. I hope the answer has helped you.</span>
