World Facts and Geography

Andorra is a small sovereign landlocked country located in the eastern Pyrenees mountains between France and Spain. It has one of the highest life expectancies in the world at around 82 years. The country's unique geography as a microstate in the Pyrenees and excellent healthcare system contribute to this longevity. Cyprus, Estonia, and Georgia are in completely different regions.

Vatican City is a landlocked sovereign city-state - an independent enclave completely surrounded by Rome, Italy. It is the smallest internationally recognized independent state in the world by both area and population. Giovanni Lajolo has served as President of the Governorate (head of government) of Vatican City. Iceland, Greece, and Latvia are full-sized countries, not walled enclaves.

San Marino is a landlocked country that is an enclave completely surrounded by Italy. It covers approximately 61 square kilometers and has a population around 30,000. Dogana is indeed its largest town, located on the border with Italy. Lithuania, Luxembourg, and Malta are independent countries but do not fit the description of being Italian enclaves.

Monaco is a small sovereign city-state on the French Riviera in South Western Europe, bordering the Mediterranean Sea. It is indeed famous as a tax haven and has a very high proportion of wealthy foreign residents (around 84% of the population). Montenegro, Slovenia, and Kazakhstan are all much larger countries and don't match the description.

San Marino is likely the odd one out because it is a microstate (very small country), while Switzerland, Austria, and Czech Republic are medium-to-large European countries. San Marino is one of the smallest countries in the world at about 61 sq km, whereas the others are substantially larger in both area and population.

Japan has been called the 'Land of the Rising Sun' for centuries. This name comes from its location east of the Asian mainland, making it one of the first places to see the sunrise each day. The name is deeply connected to Japanese culture and identity.

India has the largest postal network in the world with over 150,000 post offices. This extensive network serves India's vast population and geography, including many remote rural areas. The Indian Postal Service is one of the oldest and most widely distributed postal systems globally.

India made foundational contributions to all three mathematical fields. Algebra builds on Indian work like Brahmagupta's methods (7th century). Trigonometry developed from Indian astronomy with concepts like sine functions. Calculus has roots in the Kerala School's infinite series work (14th-16th centuries), predating European developments.

The Coovam River cleaning model in Chennai was adapted from Singapore's successful waterway restoration efforts. Singapore's approach to cleaning the Singapore River and Kallang Basin served as a reference point for urban water management, not models from the US, UK, or Japan.

Ethiopia is widely considered to be the only African nation that was never fully colonized by European powers. While Italy briefly occupied Ethiopia during 1936-1941, it was never formally colonized and maintained its independence throughout the colonial period. Sudan was colonized by Britain, Egypt by Britain, and Algeria by France.

All three countries had colonial presence in North America. Russia colonized Alaska and parts of California, Denmark controlled Greenland (geographically part of North America), and Spain had extensive colonies including Florida, California, and the southwestern United States. Therefore 'All of these' is the correct answer.

Lebanon was under French mandate rule from 1920-1943 following World War I, making it the correct answer among the options. Yemen was under British influence, while Saudi Arabia was never formally colonized by European powers. However, Syria was also a French colony, so the question is somewhat ambiguous.

The Ottoman Empire was centered in Anatolia, with its capital in Constantinople (now Istanbul). Modern Turkey occupies the core territory of the Ottoman Empire and is its successor state. Turkey is therefore the correct answer.

Vikings originated from the Scandinavian region (modern-day Denmark, Norway, and Sweden) during the Viking Age (roughly 793-1050 AD). They were seafaring warriors, traders, and explorers who raided and settled across Europe. The term 'Viking' derives from the Old Norse word for pirate raid.

Korea (specifically North Korea) was historically known as the 'Hermit Kingdom' due to its isolationist policies during the Joseon Dynasty and later under Japanese rule. The term referred to Korea's reluctance to engage in foreign trade and diplomacy, keeping itself closed off from Western influence until the late 19th century.