TopRq.com

...

China is seen variously as an ancient civilization extending over a large area in East Asia, a nation and/or a multinational entity. With nearly 4,000 years of continuous history, China is one of the world's oldest civilizations. Prior to the 19th century, it possessed one of the most advanced societies and economies in the world; but through successive dynasties it then missed the Industrial Revolution in Europe and began to decline...

A tank is a tracked, armoured fighting vehicle designed for front-line combat which combines operational mobility and tactical offensive and defensive capabilities. Firepower is normally provided by a large-calibre main gun in a rotating turret and secondary machine guns, while heavy armour and all-terrain mobility provide protection for the tank and its crew, allowing it to perform all primary tasks of the armoured troops on the battlefield...

...

...

An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. Earthquakes are measured using observations from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe...