His travels were sometimes in lands never before visited by europeans and he had many strange adventures (10) the almost unknown tribes of asia. which word would go most effectively where (10) is located?

Slavery was the key of sugar

Afirefighter is a rescuer extensively trained in firefighting, primarily to extinguish hazardous fires that threaten life, property and the environment as well as to rescue people and animals from dangerous situations.  just cut some parts to make them shorter and add some of your facts or what describes them most. or what they are supposed to do.

That is alot to ask i will write it then pm it to you