
pracheen kaal (america)

america key puraatatva mein kaee kalkramon mein ack pracheen kaal yaa pracheen charan aadi shamil hain. ise aksar upa-vibhajit kiya jaataa haye, udaaharan key liye "praarambhik", "madhya" aur "dair seey", yaa vaikalpik roop seey "nimn" aur "oopari", charanon mein. pracheen" naamak avadhi kii tithiyaan aur visheshtaen america key vibhinn hisson key beach bhinn hoti hain. kabhi-kabhi "poorv-syremic charan" yaa avadhi key roop mein bhee jaanaa jaataa haye, yeh lithic charan kaa anusaran kartaa haye aur praarambhik charan, yaa ack poorv-sanrachanaatmak charan dwara pratisthaapit kiya jaataa haye. shabdon kaa vishisht vyaapak upayog iss prakaar haih
pracheen avastha kii sanskritiyaan mitty key bartanon, bunai aur vikasit khaadya utpaadan kii praudyogikiyon key vikas mein kissy samay hain; aam taur parr way krishi parr nirbhar hoe rahey hain, jaba taka kii way samudri bhojan parr nirbhar naheen hain. samajik sangathan sthaayi gaanvon mein vikasit hoe rhaa haye. iss avadhi key shuruati hisson mein, shikaar koo dheere-dheere ikattha karke badal diyaa jaataa haye, kyonki megafauna kaa shikaar lithic charan mein girawat key saath kiya jaataa haye. pracheen kaal key anta taka, dakshin america key kuchh hisson mein, "ack sthir krishi pranali haye jiska upayog aupchaarik vastukala key saath sthaayi gaanvon mein rahane vaale logon dwara kiya jaataa haye.
pracheen kaal, gorden villie aur phillip phillips dwara apani 1958 kii pustak "americi puraatatva mein vidhi aur siddhant" mein paribhaashit paanch charanon mein seey doosara haye.