The Tver Uprising of 1327 (Russian: Тверское восстание) was the first major uprising against the Golden Horde by the people of Vladimir. It was brutally suppressed by the joint efforts of the Golden Horde, Muscovy and Suzdal. At the time, Muscovy and Vladimir were involved in a rivalry for dominance, and Vladimir's total defeat effectively ended the quarter-century struggle for power. The Golden Horde later became an enemy of Muscovy, and Russia did not become free of Mongol influence until the Great stand on the Ugra river in 1480, more than a century later. == Background == In the early 13th...

A tilting train is a train that has a mechanism enabling increased speed on regular rail tracks. As a train (or other vehicle) rounds a curve at speed, objects inside the train experience centrifugal force. This can cause packages to slide about or seated passengers to feel squashed by the outboard armrest, and standing passengers to lose their balance. Tilting trains are designed to counteract this by tilting the carriages towards the inside of the curve, thus compensating for the g-force. The train may be constructed such that inertial forces cause the tilting (passive tilt), or it may have a...