where did the first farming communities develop in early china
History of agriculture Asian rice was domesticated 8,200â€“13,500 years ago in China, with a single genetic origin from the wild rice Oryza rufipogon,[58] in the Pearl River valley region of China. Rice cultivation then spread to South and Southeast Asia.[59]
Strait Straits are the converse of isthmuses. That is, while a strait lies between two land masses and connects two larger bodies of water, an isthmus lies between two bodies of water and connects two larger land masses.
Zhang Heng In 132, Zhang introduced an intricate seismoscope to the court, which he claimed could detect the precise cardinal direction of a distant earthquake.[26] On one occasion his device indicated that an earthquake had occurred in the northwest. As there was no perceivable tremor felt in the capital his political enemies were briefly able to relish the failure of his device,[26] until a messenger arrived shortly afterwards to report that an earthquake had occurred about 400 km (248 mi) to 500 km (310 mi) northwest of Luoyang in Gansu province.[26][27][28][29]
Vikramashila Vikramashila was founded by