Explanation

The U.S. Army chief who was removed in April 2026 was Randy George.

He was serving as the Chief of Staff of the U.S. Army when he was asked to step down (effectively fired) by Defense Secretary Pete Hegseth on April 2, 2026, and was forced into immediate retirement.

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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 southern border of the United States is connected to Mexico.

Additional information:

• Border length: ~3,145 km (1,954 miles)
• Western end: Pacific Ocean (near Tijuana, Mexico)
• Eastern end: Gulf of Mexico (near Brownsville, Texas)
• Border states in USA: California, Arizona, New Mexico, Texas
• Major crossings: San Ysidro, El Paso, Laredo

Last verified on 18-03-2026

Explanation

• In April 1917, the United States entered World War I against the Central Powers.
• The main reason was Germany’s unrestricted submarine warfare in the Atlantic Ocean.
• German U-boats (submarines) attacked several ships, including American commercial vessels.
• This threatened U.S. trade and security, leading President Woodrow Wilson to declare war on Germany.

Additional information:

• World War I duration: 1914–1918
• Famous ship sunk by Germany: Lusitania in 1915
• Countries in Central Powers: Germany, Austria-Hungary, Ottoman Empire, Bulgaria
• War ended: 11 November 1918

Last verified on 11-03-2026

Explanation

• Total States: 50
• Federal District: Washington, D.C.
• 49th State: Alaska (1959)
• 50th State: Hawaii (1959)
• First State: Delaware (1787)

Last verified on 10-03-2026

Explanation

The “New START Treaty” was a nuclear arms reduction treaty between the United States and the Russia for the Further Reduction and Limitation of Strategic Offensive Arms.

This treaty entered into force on 5 February 2011.

Additional Information:

“New START” stands for New Strategic Arms Reduction Treaty

On 5 February 2026, the New START treaty officially expired.

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Explanation

• Donald Trump described the US operation in Venezuela in 2025–26 as a modern update of the Monroe Doctrine.

Additional information:

• The Monroe Doctrine was first articulated in 1823.
• It was by President James Monroe to oppose European interference in the Western Hemisphere.

Last verified on 10-02-2026

Explanation

Grand Canyon National Park

• Location: Arizona, U.S.A
• Established: 1919 as a National Park
• Famous For: Deep canyon carved by the Colorado River, colorful rock layers
• Size: Approximately 1,904 km² (735 square miles)

Additional information:

• The park is a UNESCO World Heritage Site.
• It is the one of the 7 natural wonders of the USA.

Last verified on 04-02-2026

Explanation

On January 22, 2026, the Unites States officially complete its withdrawal from the World Health Organization (WHO).

An executive order was issued by US president Donald Trump in this regard.

Reason of withdrawal: WHO’s alleged mishandling of the COVID-19 pandemic

The US had remained member of WHO for 78 years before withdrawal.

Additional Information:

The U.S. became the first country to withdraw from WHO since it was founded in 1948.

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Explanation

The Missouri River is the longest in the United States

It is a river in the Central and Mountain West regions of the United States

Length: Approximately 2,341 miles (3,767 km).

Nicknamed the "Big Muddy" 

Mouth: Joins the Mississippi River north of St. Louis, Missouri.