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29 de may. de 2024 · Polio Vaccine Trials: Dr. Jonas Salk began testing the polio vaccine on humans. This was a crucial step towards eradicating the disease, which had caused widespread fear and suffering. First Successful Open-Heart Surgery : Dr. John Gibbon performed the first successful open-heart surgery using a heart-lung machine.
29 de may. de 2024 · First Polio Vaccine: Jonas Salk's polio vaccine was declared safe and effective in 1955. This breakthrough led to a dramatic decline in polio cases and has saved countless lives since. First Nuclear-Powered Submarine : The USS Nautilus, the world's first nuclear-powered submarine, was commissioned by the U.S. Navy in 1955.
Hace 22 horas · t. e. The Republics of the Union of Soviet Socialist Republics or the Union Republics (Russian: Сою́зные Респу́блики, romanized: Soyúznye Respúbliki) were national-based administrative units of the Union of Soviet Socialist Republics (USSR). [1] The Soviet Union was formed in 1922 by a treaty between the Soviet republics of ...
Hace 22 horas · www .oldbridge .com. Old Bridge Township is a township in Middlesex County, in the U.S. state of New Jersey, located in the Raritan Valley region and within the New York metropolitan area. As of the 2020 United States census, the township was the state's 21st-most-populous municipality, [21] with a population of 66,876, [9] [10] an increase of ...
