William of Normandy defeated Harold at Hastings in 1066, beginning Norman rule in England. This is a well-documented historical or scientific fact.

The Opium Wars (1839–42, 1856–60) were conflicts between China and Britain over opium trade, leading to unequal treaties.

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

The Suez Canal links the Mediterranean Sea with the Red Sea, allowing direct shipping between Europe and Asia since 1869.

Garrett Hardin explained in 1968 that shared resources tend to be overused and depleted if individuals act solely in self-interest.

Japan uses the yen (JPY), introduced in 1871, and it remains one of the most traded currencies worldwide.

The Battle of Hastings saw William the Conqueror defeat King Harold II, bringing Norman rule and cultural transformation to England.

Robert Hooke used a microscope in 1665 to describe cork structures as “cells,” laying the foundation for modern cell biology.

James Clerk Maxwell formulated the classical field equations that unify electricity, magnetism, and light as electromagnetic waves.

Topology studies spatial properties preserved through stretching or bending, without tearing or gluing, influencing modern physics.