Jul 1, 1347
First guns.... BOOMthis is when the europeans first created guns.
Aug 14, 1390
Astrolabe booksthe first book on how to construct an astrolabe.
Dec 25, 1406
map of the world founda map of the world that was lost is now found and everyone is happy.
Apr 10, 1420
sailing awayyyyyyythe first caravals are invented in china.