Kantian ethics emphasizes duty and moral laws derived from reason, proposing actions are right if based on universal principles.

The Yangtze River, stretching about 6,300 km, is the longest river in Asia and the third-longest in the world after Nile and Amazon.

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

The Schengen Agreement allows passport-free travel across many European countries, facilitating movement and integration in the EU.

Marie Curie, with Pierre, discovered radium and polonium in 1898, pioneering radioactivity research and earning two Nobel Prizes.