Explanation

• Niagara Falls are situated between the United States and Canada.
• They are located on the border between New York State (USA) and Ontario Province (Canada).
• Continent: North America
• Height: Approximately 51 meters (167 feet)

Number of Waterfalls: 3

1. Horseshoe Falls
2. American Falls
3. Bridal Veil Falls

Last verified on 16-06-2026

Explanation

• First recognition: Morocco
• Year: 1777
• U.S. independence declared: 1776
• Treaty of Paris signed: 1783
• Moroccan ruler: Sultan Mohammed III

Last verified on 14-06-2026

Explanation

• Alaska is the largest state of the USA by area.
• It was purchased from Russia in 1867.

Additional information:

• The United States of America is located in the North American continent.
• It consists of 50 states.
• California is the largest state of the USA by population.
• Texas is the 2nd largest state by area.

Last verified on 27-04-2026

Explanation

Starting in June 2026, new U.S. dollar bills will feature the signatures of President Donald J. Trump and Treasury Secretary Scott Bessent.

Note: This is the first time in history that a sitting U.S. president's signature will appear on the nation's banknotes.

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Explanation

• The Three Sisters are volcanic peaks in the U.S. State of Oregon.
• They are at the boundary of Lane and Deschutes counties.
• The three peaks are the third-, fourth-, and fifth-highest in Oregon.

The Sisters are now known as:

1. South Sister: 10,363 ft (3,158.5 m)
2. Middle Sister: 10,052 ft (3,063.7 m)
3. North Sister: 10,090 ft (3,075.3 m)

Last verified on 29-05-2026

Explanation

• Atlanta's Hartsfield-Jackson International Airport is the world's busiest airport.
• It handling over 106 million passengers.
• It is located in Atlanta, Georgia, United States.
• It was opened on September 15, 1926.
• Number of runways: 5

Last verified on 26-05-2026

Explanation

 World War I (1914–1918)

Explanation

• The 49th Parallel is an important latitude line in North America.
• It forms most of the border between the USA and Canada.
• It was established through historical agreements between the two countries.
• It is one of the longest straight international borders in the world.
• It separates southern Canada from northern United States.

Last verified on 16-05-2026

Explanation

• Leader: Winston Churchill
• Speech: Fulton (Sinews of Peace) Speech (Missouri, USA)
• Date and Year: March 5, 1946
• Meaning: Division of Europe into East (Soviet) and West (Democratic) blocs
• Era: Start of Cold War

Last verified on 16-05-2026

Explanation

NASA, the space agency of the United States (US), developed the Nancy Grace Roman Space Telescope to investigate dark matter, dark energy, and the infrared universe. Completed in 2026, it features a 2.4-meter mirror with a, field of view 100 times larger than Hubble, allowing for rapid, wide-field 3D cosmic mapping.