World Geographical Records

The Amazon River has the world's largest drainage basin at about 7.5 million square kilometers - covering 40% of South America and draining parts of 8 countries. By comparison, the Nile has about 3.3 million sq km. Though the Nile is the longest river, the Amazon carries more water and has a vastly larger catchment area.

The Trans-Siberian Railway is the longest railway line in the world, spanning 9,289 km (5,772 miles) across Russia from Moscow to Vladivostok. It crosses multiple time zones and landscapes.

The Sargasso Sea (note: spelled 'Sargasso', not 'Saragossa' in the option, but this is clearly referring to it) is the only sea without a coastline. It's defined by ocean currents in the North Atlantic Ocean, bounded by the Gulf Stream, North Atlantic Current, and other currents. All other seas listed (White Sea, Sea of Okhotsk, Tasman Sea) are marginal seas with coastlines.

Ans 1 : Atlantic Ocean

   Arctic Ocean

4. Black Sea

1.  North American continent and the island of Cuba

The Trans-Canada Highway is frequently cited as the longest national highway in the world, spanning approximately 7,800 kilometers across all ten provinces. While international routes like the Pan-American Highway are longer overall, they consist of multiple connected highways across different countries. Among the specific options provided, the Trans-Canada Highway is the correct selection.

The Nile River in Africa is traditionally recognized as the longest river in the world, stretching approximately 6,650 kilometers. It flows through eleven countries and empties into the Mediterranean Sea.

The Cullinan Diamond, discovered in South Africa in 1905, is the largest gem-quality rough diamond ever found, weighing 3,106 carats. It was eventually cut into several large stones, including the Great Star of Africa.

The Pacific Ocean is both the largest and the deepest ocean on Earth. It covers about one-third of the planet's surface and contains the Mariana Trench, the deepest point in the world's oceans.

The Circum-Pacific belt (Ring of Fire) and the Mid-Atlantic Ridge are among the most seismically active regions in the world due to plate boundary interactions. While the Indian Ocean has specific active zones like the Java Trench, 'Circum-Indian Ocean' is not a recognized major global seismic belt. The Atlantic Ocean also has seismic activity primarily along its central ridge, but the 'Circum-Atlantic' margins are generally passive compared to the Pacific.

Asia is the world's largest continent by both land area and total population. It covers approximately 30% of Earth's total land area and is home to about 60% of the world's current human population.

The Atlantic Ocean is colloquially known as the 'Herring Pond' because of its vast size and the historical abundance of herring within it. The term is often used humorously to describe the crossing between Europe and North America.

Gibraltar is known as the 'Key to the Mediterranean' because of its strategic location at the narrow entrance to the Mediterranean Sea from the Atlantic. Controlling this point has been of immense military and commercial importance throughout history.