Explanation

• First Polio Vaccine Introduced: 1955
• Developer: Dr. Jonas Salk
• Type: Inactivated Polio Vaccine (IPV)
• Oral Polio Vaccine (OPV): 1961
• Developer of OPV: Dr. Albert Sabin

Last verified on 20-07-2026

Explanation

• The Tibetan Plateau is the highest and largest plateau on Earth.
• It is known as "the roof of the world".
• It's located in Southwest China.
• The height of the Plateau ranges is 16,000 feet.
• It is an example of an inter-mountainous Plateau (formed between mountains).

Additional information:

• Solfatara is the smallest plateau.
• This plateau is only 127.66 sq K or 79.15 sq mi (2).

Last verified on 26-05-2026

Explanation

• Name: Shirin Ebadi
• Country: Iran
• Award: Nobel Peace Prize
• Year: 2003
• Recognition: Human rights and democracy

Last verified on 02-09-2026

Explanation

• Greenland is the world’s largest island.
• It is located between the Arctic and Atlantic Oceans.
• It belongs to the Kingdom of Denmark.
• Population is about 56,000 people only.
• Area: 2.131 million km²
• Maximum width: 1,050 km
• Location: North America region (Arctic area)
• Capital: Nuuk

Last verified on 06-06-2026

Explanation

• Uruguay won the first-ever FIFA World Cup in 1930.
• The inaugural FIFA World Cup was hosted by Uruguay.
• Uruguay defeated Argentina 4–2 in the final.
• The tournament was held from 13–30 July 1930.

Additional information:

• 1934 – 🇮🇹 Italy
• 1938 – 🇮🇹 Italy
• 1950 – 🇺🇾 Uruguay
• 1954 – 🇩🇪 West Germany
• 1958 – 🇧🇷 Brazil

Verified & Updated