"opium" - key terms from Wikipedia

afghan opium
afghanistan opium
chinese opium
first opium	war
growing opium
illicit opium
importation of opium
legal opium	production
opium
opium	addiction
opium	alkaloids
opium	ban
opium	cultivation
opium	den
opium	dens
opium	extract
opium	importation
opium	market
opium	paste
opium	pipe
opium	poppies
opium	poppy
opium	poppy cultivation
opium	production
opium	smoking
opium	tincture
opium	tincture and paregoric
opium	trade
opium	war
opium	wars
powdered opium
pure opium
raw opium
second opium	war
tincture of opium
tons of opium