id	keyword
cjah-1430	british
cjah-1430	tin
cjah-1430	plateau
cjah-1430	jos
cjah-1430	africa
cjah-1430	imperialism
cjah-1430	nigeria
cjah-1430	people
cjah-1430	colonial
cjah-1430	mining
cjah-1430	journal
cjah-1430	resources
cjah-1430	european
cjah-1430	colonies