How did French authorities control their colonial territories in Indochina
Apex

I'm pretty sure the answer is, using a strong military to take revenge on groups or individuals that were a threat to the French Citizens.

Answer By using a powerful military to get revenge on any groups that harmed French citizens (Apex)

depends on the age of the teen, many believe by the age of 16 a person should know the strong difference between right and wrong along with the difference between risky and immediate death. swimming with sharks might be dangerous but swimming with sharks while bloody meat is attached to you is just insane. even more if you have no idea what you're doing. however, no matter the age, as long as the person is skilled enough and has the mental and physical capacity to control their actions doing whatever sport they put their mind to is all that matters.