Geography

The term "Horn of Africa" refers to the easternmost projection of the African continent, which includes countries like Somalia, Ethiopia, Eritrea, and Djibouti. Somalia is the country most commonly associated with the "Horn of Africa" due to its prominent location on the peninsula.

The Bosphorus Strait connects the Black Sea to the Sea of Marmara, serving as a natural waterway between these two bodies of water in Turkey.

The Taklamakan Desert is located in China, specifically in the Xinjiang Uyghur Autonomous Region. It is one of the largest sandy deserts in the world.

The Danube is the second longest river in Europe after the Volga River, which is located in Russia. The Danube flows through multiple European countries, confirming its location in Europe.

The Lena River is one of the largest rivers in Russia, flowing through Siberia to the Arctic Ocean. It is not located in Turkey, Afghanistan, or Italy, making Russia the correct answer.

The Volga River is the longest river in Europe, stretching about 3,530 kilometers. It is longer than the Danube, Ural, and Don rivers, making option A the correct answer.

Algeria is the largest country in Africa by land area, covering approximately 2.38 million square kilometers, which is larger than Sudan, Nigeria, and South Africa.

The Saint Lawrence River is a large river located in the middle latitudes of North America, flowing from the Great Lakes to the Atlantic Ocean.

The Rio Grande river acts as a natural boundary between the USA and Mexico, separating the two countries along a significant portion of their border.

The Yangtze River is approximately 7,109 km (4,417 miles) long, making option A the correct length. This length is widely accepted as the standard measurement for the longest river in Asia.