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1.
Rivers in South America that are over 4000 km in length.
There is only Amazon.
3.
United Nations member states.
4.
U.S. states that are bigger by area than Rhode Island.
5.
Countries bordering Germany.
6.
Countries where Equator runs through their land.
8.
Capitals of South Africa.
They are Bloemfontein, Cape Town and Pretoria.
9.
Top 100 highest mountains outside Asia.
All of them in only 8 Asian countries.
10.
Population of Iceland.
11.
Official languages of Bolivia.
12.
Mediterranean islands that are over 10,000 sq km.
There are only Sicily and Sardinia.
13.
Megacities (cities > 10 million) in China.
They are Guangzhou, Shanghai, Beijing, Tianjin and Xiamen.
14.
Population of Moscow.
15.
Height of Mount Everest.
16.
Countries with over 100 million population.
17.
Countries where English is an official language.
18.
Rivers in Saudi Arabia.