The vigesimal numbering system was based on . 20 10 30 5

A, 20.

The vigesimal numbering system, or base-20 numeral system, is based on the number twenty. Twenty individual numerals/digits are used, ten more than in the usual decimal system.

codfish influenced the yankee trade because they traded it with the americans and the americans traded livestock, molasses and stuff that they can make clothes out of (like wool, and leather). they also could make weapons to.

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity