Landlocked country one, making them the biggest contiguous group in the world. Also, the Central Asian and Caucasian clusters can be considered contiguous, joined by the landlocked Caspian Sea. Mongolia is almost part of this cluster too, being separated from Kazakhstan by only , across Russian or Chinese territory. There are the following "single" landlocked countries (each of them borders no other landlocked country): If the Caucasian countries and Kazakhstan are counted as part of Europe, then Europe has the most landlocked countries, at 20. If these transcontinental countries are included in Asia, then Africa has the most, at 16. Depending on
Boehm's gerbil Boehm's gerbil Boehm's gerbil ("Gerbilliscus boehmi") is a species of gerbil found in Angola, Burundi, Democratic Republic of the Congo, Kenya, Malawi, Mozambique, Rwanda, Tanzania, Uganda, and Zambia. Its natural habitats are dry savanna, moist savanna, and arable land. This is a common species with a wide distribution which faces no obvious threats, so the International Union for Conservation of Nature has rated its conservation status as being of "least concern". Boehm's gerbil is a large member of the genus with a very long tail; head-and-body length averages and tail . The forehead and muzzle are dark brown to black,