<span>economic opportunity and freedom from government control</span>
It’s goes period, colon (:), this thing (‘), and comma I think
give them there land Explanation:
Medical technology to treat malaria allowed Europeans to more successful colonize tropical areas during 1800s. During 1800s European considered malaria as a massive treat to their plan to colonize west Africa. The discovery for a medicine for malaria enabled European to colonize west Africa..
