Absolute chronology<span>. Geochronology in which the time-order is based on </span>absolute<span> age, usually measured in years by radiometric dating, rather than on superposition and/or fossil content as in relative </span>chronology<span>.</span>
The answer is B
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Hello there The Mongols only built up Russian cities that were deemed vitally important. <span>was the pattern of Mongol settlement in Russia and that is the correct statement</span>