20 h 46 min, 4 mars 1825 ans - Henry Clay develops the American System
Description:
 It consisted of three mutually reinforcing parts: a tariff to protect and promote  Americans industry. It also devised in the burst of nationalism that followed the war of 1812. 
Ajouté au bande de temps:
Date:
20 h 46 min, 4 mars 1825 ans
Maintenaint
 ~ Il y a 200 ans