1. Mediterranean Sea, Black Sea, Iberian Peninsula, Anatolian Peninsula, Baltic Sea, North Sea, English Channel, Straits of Gibraltar, the Alps
Russia, Ukraine, Poland, Turkey, Italy, Greece, France, Spain, Germany, United Kingdom, Sweden, Holland (Netherlands), Switzerland, Romania

2. Volga River, Bering Strait, Caspian Sea, Lake Baikal

3. Nile River, Sahara Desert, Lake Victoria, Niger River, Zambezi River, Congo River, Namib Desert, Kalahari Desert, Cape Aghullas, Atlas Mountains
Egypt, Libya, Algeria, Morocco,
Mali, Sudan, Ethiopia, Somalia, Nigeria, Kenya, Congo Republic, Tanzania, Madagascar, Zimbabwe, South Africa, Namibia

4. Red Sea, Persian Gulf, Arabian Peninsula, Arabian Desert, Tigris River, Euphrates River
Saudi Arabia, Iraq, Iran, Afghanistan, Turkey, Syria, Israel, Uzbekistan, Lebanon, Egypt, Oman