Open4Discuss

Geography

1. Largest Country by Area: Russia (17.1 million km²).
2. Smallest Country by Area: Vatican City (0.49 km²).
3. Longest River: The Nile (6,650 km) or Amazon (debated).
4. Highest Mountain: Mount Everest (8,848.86 m).

History

1. Oldest Civilization: The Sumerians in Mesopotamia (c. 3100 BCE).
2. Indian Independence: August 15, 1947.
3. World War I Duration: 1914–1918.

Science

1. Light Speed: 299,792,458 m/s.
2. Periodic Table: 118 confirmed elements.
3. Nobel Prize in Physics 2022: Alain Aspect, John F. Clauser, and Anton Zeilinger for experiments with entangled photons.

Technology

1. First Computer: ENIAC (1945).
2. Largest Social Media Platform (2025): Facebook with over 2.9 billion users.
3. First Satellite: Sputnik 1 by the Soviet Union (1957).

India

1. National Animal: Bengal Tiger.
2. Longest River: Ganga (2,525 km).
3. First President: Dr. Rajendra Prasad.

Sports

1. First Olympics: Athens, Greece, 1896.
2. Cricket World Cup Winners (India): 1983 and 2011.
3. Highest Scorer in Football (2025): Cristiano Ronaldo with over 850 goals.

Miscellaneous

1. Tallest Building: Burj Khalifa, UAE (828 m).
2. Fastest Land Animal: Cheetah (80-98 km/h).
3. Most Spoken Language: English (as a second language) and Mandarin (native speakers).