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
Botta's gerbil Botta's gerbil Botta's gerbil ("Dipodillus bottai") is a species of gerbil endemic to Sudan and possibly northern Kenya. According to the International Union for Conservation of Nature, it was listed as Least Concern in 1996 until it was listed as Data Deficient in 2004. According to a 2013 book, it is known from a few specimens taken from four or five localities in a small area between the rivers White Nile and Blue Nile; its habitat is fields of vegetables and cereals. Aside from this information, nothing else is known about the species including its population and threats. Botta's gerbil