Who among the following geographers laid the foundation of the dichotomy of 'General vs Special Geography'?

Who among the following geographers is related to 'primate city' concept?

Which of the following geographers first gave the concept of 'Social Darwinism' in geography (the state as an organism)?

Which of the following diversity indices is also known as the Information Index?

Which of the following scholars coined the term 'Geopolitics'?

For which one of the following countries Spanish is not an official language?