World Facts and Geography

Russia is the world's largest country by land area, covering approximately 17.1 million square kilometers. Canada is the second-largest country. Africa is a continent, not a country, so it cannot be the correct answer.

Canada is the world's second-largest country by land area, covering approximately 9.98 million square kilometers. Russia is first, while China and the USA are third and fourth respectively.

India has the largest postal network in the world with over 154,000 post offices, serving both urban and rural areas across the country. This extensive network reflects India's vast population and geographic spread.

India was the world's only source of diamonds until diamonds were discovered in Brazil in 1725 and later in South Africa in 1866. For centuries, India's Golconda region was famous for producing the world's finest diamonds.

The Great Victoria Desert is located in Australia, specifically in the southern part of Western Australia and extending into South Australia. It is the largest desert in Australia and covers over 420,000 square kilometers. Canada and North America have different desert systems.

Australia is the smallest continent by land area at about 8.5 million square kilometers. Even when combined with Oceania's islands, it remains significantly smaller than Europe (10.2 million km²) and the other continents.

DOCOMO (NTT DOCOMO) is Japan's largest telecommunications company. It originated in Japan and is part of the NTT (Nippon Telegraph and Telephone) group. The name itself comes from 'docomo' meaning 'everywhere' in Japanese.

Vatican City is the smallest country in the world by both area (0.44 sq km) and population (around 800 people). It is an independent city-state enclaved within Rome, Italy. Nauru is the smallest island nation, but Vatican City is significantly smaller than all the options listed.

Norway is known as the 'Land of the Midnight Sun' because during summer months, approximately 70% of Norway lies within the Arctic Circle where the sun doesn't set for weeks. This natural phenomenon occurs due to the Earth's axial tilt. Argentina, Canada, and Austria don't experience this phenomenon to the same extent.

The 'Four Asian Tigers' refers to Taiwan, Singapore, South Korea, and Hong Kong - four economies that underwent rapid industrialization and sustained high growth rates between the 1960s and 1990s. None of the other combinations match this specific economic grouping.

India is the 7th largest country in the world by land area, covering approximately 3.287 million square kilometers. The blank in the question refers to this ranking position. The countries ahead of India are Russia, Canada, China, USA, Brazil, and Australia.

South Africa is called the 'Rainbow Nation' - a term coined by Archbishop Desmond Tutu to describe the country's post-apartheid diversity. The nickname symbolizes South Africa's multicultural society coming together after decades of racial segregation. Nelson Mandela embraced this vision of unity in diversity during his presidency.