evidence: The Fergana (also spelled Ferghana) Valley is like a vast oasis that lies at a convergent point of some of the great deserts and great mountains of Central Asia. It is unevenly divided among Uzbekistan, Tajikistan and Kyrgyzstan with most of it in Uzbekistan. It is the most populous area in Central Asia, with 11 million people, many of them relatively conservative Muslims. The Uzbekistan section is home to about 10 million people, a third of Uzbekistan’s population. It also contains the region’s richest agricultural land that have traditionally produced melons and vegetables. [...] The Fergana Valley spreads across northern Tajikistan from Uzbekistan on the west to Kyrgyzstan on the east. This long valley reaches its lowest elevation of 320 meters at Khujand on the Syr-Darya. Rivers bring rich soil deposits into the Fergana Valley from the surrounding mountains, creating a series of fertile oases that have long been prized for agriculture. In the Soviet era, the Vakhsh River was dammed for irrigation and electric power, and factories were built along its banks. Hot summers and frigid winters characterize the climate. The high mountain ridges protect the Fergana Valley and other lowlands from Arctic air masses, but temperatures drop below freezing more than one-hundred days a year.