Decades: 1670s 1680s 1690s 1700s 1710s - 1720s - 1730s 1740s 1750s 1760s 1770s
Years: 1717 1718 1719 1720 1721 - 1722 - 1723 1724 1725 1726 1727
Abraham De Moivre states De Moivre's theorem connecting trigonometric functions and complex numbers
Publication of the first book of Bach's Well-Tempered Clavier
July 25 - Three Years War begins along Maine and Massachusetts border.
April 18 - David Ricardo, economist
September 27 - Samuel Adams, American revolutionary leader
Kangxi Emperor of China\n