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

Sulfur dioxide emitted from fossil fuel combustion oxidizes to sulfuric acid in the atmosphere, contributing to acid rain.

Ludwig van Beethoven composed the Ninth Symphony, whose final movement sets Schiller's "Ode to Joy" and celebrates human solidarity.

Winston Churchill used the term “Iron Curtain” in 1946 to describe the division of Eastern and Western Europe.

The Terracotta Army in Xi’an was built for Qin Shi Huang, China’s first emperor, symbolizing his power and afterlife beliefs.