Kangchu system
... that the Kangchu system was instrumental in driving Johor's economy during the 19th century?
... that the <b id="mwGgI"><a href="./Kangchu_system" id="mwGgM" rel="mw:WikiLink" title="Kangchu system">Kangchu system</a></b> was instrumental in driving <a href="./Johor" id="mwGgQ" rel="mw:WikiLink" title="Johor">Johor</a>'s economy during the 19th century?