An agreement signed on 18
April 1855, Between the United
Kingdom and the Kingdom of
Siam
➢ Aim : Liberalized foreign trade
in Siam
➢ Signed by 5 Thai diplomats
and Sir John Bowring,
governor of Hong Kong and
Britain’s envoy
➢ Liberalized trade rules and
regulations by creating a new
system of imports and exports
➢ No more heavy royal taxes on
foreigners
➢ Establishment of Britain
consulate in Bangkok and
guaranteed full extraterritorial
powers