J.J. Thomson discovered the electron in 1897 using cathode ray experiments, a major step in atomic physics.

Magna Carta established legal limits on King John of England, becoming a foundation for constitutional law and parliamentary rule.

Mars is called the Red Planet due to iron oxide (rust) on its surface that gives it a reddish appearance.

Friedrich Nietzsche wrote “God is dead” in *The Gay Science* (1882), reflecting on decline of religion in modern society.

The Sapir-Whorf hypothesis suggests language influences thought and worldview, highlighting the relativity between culture and speech.

The Treaty of Tordesillas split new overseas territories between Spain and Portugal, mediated by the Pope to avoid conflict.

The Sumerians developed cuneiform around 3200 BCE in Mesopotamia, marking the first recorded writing system in human history.

The Black Death (1347–51) killed about one-third of Europe’s population, spread by fleas on rats. This is a well-documented historical or scientific.

Amelia Earhart completed her solo flight across the Atlantic in 1932, becoming a symbol of aviation and women’s achievement.

Darius I constructed Persepolis around 518 BCE as a ceremonial capital of the Achaemenid Empire. This is a well-documented historical or scientific.