Age 21. In thirteen countries, 21 is the age of majority. See also Coming of age. In eight countries, 21 is the minimum age to purchase tobacco products. In seventeen countries, 21 is the drinking age. In nine countries, it is the voting age. In most US states, 21 is the minimum age at which a person may gamble or enter casinos.The 21st (twentyfirst) century is the current century of the Anno Domini era or Common Era, in accordance with the Gregorian calendar.It began on January 1, 2001, and ends on December 31, 2100. It is the first century of the 3rd millennium.. The beginning of the 21st century has been marked by the rise of a global economy and Third World consumerism, deepening global concern over terrorism ...
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