15 bce
Construction
About this time Emperor Augustus [ b. September 23, 63 bce, d. 14 ce] sets a limit of about 21 m (70 ft) on the height of buildings in Rome. See also 100 bce Construction; 100 ce Construction.
ToolsThe Dictionary of Local Expressions by Yang Hsiung [b. 53 bce, d. 18 ce] indicates that the Chinese have invented the belt drive, which will not be known in Europe until 1430.



