Which is one of the ways that a person can be enslaved?

Explanation:

There were three types: those who were slaves through conquest, those who were slaves due to unpaid debts, or those whose parents gave them as slaves to tribal chiefs. Chieftains would barter their slaves to Arab, Berber, Ottoman or European buyers for rum, spices, cloth or other goods.

are these the benchmarks questions?

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.