World Facts and Geography

Libya's flag under Muammar Gaddafi was the only national flag that was a single solid color (green) without any design, emblem, or other colors. This plain green flag represented Gaddafi's political ideology (Green Book). Mauritania, Bosnia, and Jamaica all have flags with multiple colors and/or designs.

Switzerland's national flag is square (uniquely, with Vatican City as the only other sovereign state). The Swiss flag is one of the very few non-rectangular flags in the world.

Nepal has the only non-quadrilateral national flag in the world: it is a double-pennant shape formed by two stacked triangles. All other countries use rectangular flags.

Tasmania has some of the cleanest air in the world due to its remote location in the Southern Ocean and westerly winds that carry unpolluted air across the region. The CSIRO monitoring station at Cape Grim records this pristine air quality.

India has the longest written constitution in the world with over 146,000 words originally. The US constitution is much shorter, while Russia and Iraq do not hold this record, making option A correct.

Samba originated in Brazil, specifically in Rio de Janeiro, evolving from African rhythms brought by enslaved people and Portuguese musical influences. It became Brazil's national dance and is closely associated with Carnival. Argentina, Mexico, and France are not associated with Samba's origin.

Europe is called the "Cradle of Western Civilization" because ancient Greece and Rome - the foundations of Western philosophy, democracy, law, and culture - were located there. This term is universally used in historical discourse.

Kakadu National Park is located in Australia's Northern Territory. It is one of the largest national parks in Australia, covering nearly 20,000 square kilometers, and is known for its rich biodiversity, Aboriginal rock art sites, and diverse ecosystems including wetlands, rivers, and sandstone escarpments.

New Zealand became the first country in the world to grant women the right to vote in 1893, under the leadership of Kate Sheppard and the suffrage movement. This was a landmark achievement for women's rights globally.

The Aztec civilization flourished in central Mexico, with their capital city Tenochtitlan located on the site of modern-day Mexico City. The Aztecs established a powerful empire in the region before the Spanish conquest in the 16th century.

Great Britain created modern Sudan by uniting the Muslim-dominated north and Christian-majority south during colonial rule. This British decision to merge these distinct regions into one territory laid the groundwork for future conflicts, including the Darfur crisis and eventual South Sudan independence.

Indonesia was colonized by the Dutch and known as the Dutch East Indies from the early 17th century until 1945 when Indonesia declared independence. The Dutch controlled the archipelago for nearly 350 years through the Dutch East India Company (VOC) and later direct Dutch colonial rule.

Vietnam was colonized by France and was part of French Indochina from the late 19th century until 1954. French rule lasted nearly 70 years, ending after the Battle of Dien Bien Phu and the Geneva Accords, which temporarily divided Vietnam at the 17th parallel.