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Hace 2 días · 1st century AD: The first use of respiratory protective equipment is documented by Pliny the Elder (c. 23 AD –79) using animal bladder skins to protect workers in Roman mines from red lead oxide dust.
Hace 2 días · Alzheimer's disease (AD) is a neurodegenerative disease that usually starts slowly and progressively worsens, and is the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events.
Hace 5 días · Athens grew from a village of 6000 people in 1834, when it became the capital, to 63,000 in 1879, 111,000 in 1896, and 167,000 in 1907. [33] In Athens and other cities, men arriving from rural areas set up workshops and stores, creating a middle class.
14 de may. de 2024 · In 1907, when the French newspaper Le Matin announced that it would sponsor and publicize an 8,000-mile race from what was known as Peking (now Beijing) to Paris, automobiles were still a rare...
Hace 2 días · As was the rest of the Western Roman Empire, Spain was subject to the numerous invasions of Germanic tribes during the 4th and 5th centuries AD, resulting in the end of Roman rule and the establishment of Germanic kingdoms, marking the beginning of the Middle Ages in Spain.
Hace 2 días · 1957 was a common year starting on Tuesday of the Gregorian calendar, the 1957th year of the Common Era (CE) and Anno Domini (AD) designations, the 957th year of the 2nd millennium, the 57th year of the 20th century, and the 8th year of the 1950s decade.
Hace 1 día · Mai: Abkommen von Cartagena (1907) zwischen Spanien, Großbritannien und Frankreich 1. Juli: Deutschland , Österreich-Ungarn und Italien verlängern ihren Dreibund um weitere sechs Jahre.
