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Until the early part of the twentieth century, significant advancements were made in various fields, including science, technology, and medicine. Notable developments included the theory of relativity by Albert Einstein, the germ theory of disease, and the invention of the automobile and airplane. Additionally, the early stages of modern psychology emerged with figures like Sigmund Freud, and groundbreaking inventions such as electricity and telecommunication transformed daily life. These innovations laid the groundwork for further advancements in the century that followed.

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