Nemrut (volcano) of the earliest trade routes. Two eruptions of Nemrut were probably witnessed by people of Urartu, an ancient state located in the eastern Turkey. These eruptions occurred c. 787 BC (period of King Menua) and c. 657 BC (period of King Rusa II), and the latter eruption might cause the sudden disappearance of the city Uaiais located 30 km east of Süphan. In the 1980s, Japanese volcanologists studied the evolution of gases inside the caldera of Nemrut. They found that the ratio of helium isotopes He/He is 1.06, which indicates volcanic activity (most of the measured helium evolved from the
Slovak football clubs in European competitions Slovak football clubs in European competitions Slovak football clubs have participated in European football competitions since 1956. Before 1993 Slovakia was a part of Czechoslovakia, therefore Slovak teams represented this country and did not always have a spot in European competitions. "All statistics and records are accurate as of 30 September 2018." For the 2014–15 UEFA competitions, the associations were allocated places according to their 2013 UEFA country coefficients, which take into account their performance in European competitions from 2008–09 to 2012–13. In the 2013 rankings used for the 2014–15 European competitions, Slovakia's coefficient points total is 14.208. After earning