Which is the most spoken native language in the world?

Which country is the largest by land area in the world?

Which planet has the Great Red Spot?

The Sahara Desert is located primarily in which continent?

The concept of 'zero' as a number was first developed in which ancient civilization?

The Magna Carta was signed in which year?

Which country is the fifth most populous country in the world?

Which world organisation works specifically to promote and safeguard international trade?

Which element is the most abundant in the Earth's crust?

Which sea is the saltiest in the world?

Which is the most widely spoken language in the world by number of native speakers?