Around 100 of the just over 200 countries in the world either grow gra pes or at least plant vines for the production of table grapes, sultanas, grape juice and RCGM (rectified grape must concentrate). The vast majority of vineyards are located from the 40th to 50th degrees north and from the 30th to 40th degrees south latitude (the two vine belts). The criteria for the suitability of a region for viticulture are called viticultural suitability. See lists of countries described in the present wine dictionary under Africa, Asia, Europe, New World, Tropics, South America and USA (with 41 of the 50 states as separate keywords), as well as wine production volumes.
For me, Lexicon from wein.plus is the most comprehensive and best source of information about wine currently available.Egon Mark
Diplom-Sommelier, Weinakademiker und Weinberater, Volders (Österreich)