Explanation

• Abraham Lincoln is featured on the US $5 bill.
• He was  the 16th president of the United States
• His portrait has been featured on the bill since 1869.
• Years of printing 1861

Explanation

• Joe Biden and Kamala Harris were named Time Magazine's Person of the Year in 2020.
• TIME credited them for "changing the American story" and offering a "vision of healing in a grieving world"
• Joe Biden served as the 46th President
• Kamala Devi Harris 49th Vice President of the United States
• From January 20, 2021, to January 20, 2025.

Explanation

• Jansher Khan is a legendary Pakistani squash player.
• He rose to fame at the age of 16.
• World Junior Squash Championships (Australia) – 1986
• Senior World Open Title – 1986 (same year)
• World Open Titles – 8 times (record)
• British Open Titles – 6 times

Last verified on 04-04-2026

Explanation

• Ibn Khaldun was a famous Arab historian and sociologist.
• Lived during the 14th century (1332–1406 AD).
• Known for his work “Muqaddimah”.
• Considered the father of sociology and historiography.

Last verified 02-04-2026

Explanation

• Isaac Newton (1642–1727) was an English physicist and mathematician.
• He formulated the laws of motion and law of universal gravitation.
• His work laid the foundation for classical mechanics.

Last verified on 02-04-2026

Explanation

• Jabir ibn Hayyan, known as the "father of chemistry."
• He was an Arab Chemist.
• Composition of Alchemy was written by Jabir Bin Hayyan.

Notable ideas:

• Use of organic substances in chemistry
• Sulfur-mercury theory of metals
• Science of the balance
• Science of artificial generation

Last verified on 07-02-2026

Explanation

• Greta Thunberg: 16-year-old climate activist from Sweden.
• Award: Named Time Magazine’s Person of the Year on December 11, 2019.
• Significance: Youngest ever to receive this title.

Last verified on 24-03-2026

Explanation

Immanuel Kant

• Born: 22 April 1724, Königsberg, Prussia (now Kaliningrad, Russia)
• Died: 12 February 1804, Königsberg
• Famous Works: Critique of Pure Reason, Critique of Practical Reason, Groundwork of the Metaphysics of Morals
• Philosophical Era: Enlightenment (18th century)
• Major Contribution: Ethics based on reason, theory of knowledge

Last verified on 18-03-2026

Explanation

• Abraham Lincoln, the 16th President of the United States, is credited with this statement.
• He strongly opposed slavery and worked to abolish it in the U.S..
• The quote reflects his belief that slavery was morally unacceptable under any circumstances.

Additional information:

• American Civil War: 1861–1865
• Emancipation Proclamation: Freed slaves in Confederate states
• Gettysburg Address (1863): Famous speech on equality and democracy
• Born: 1809, Kentucky, USA
• Assassinated: 1865, Washington D.C., USA

Last verified on 16-03-2026

Explanation

Lionel Lukin was a British carriage builder and inventor of the lifeboat in 1785.

Henry Greathead, the first purpose-built, operational lifeboat, named Original, in 1790