It's a,b, and e (earthquakes, formation of new crust, volcanism)
To push the enslaved to produce more crops. to render the enslaved powerless as to not revolt. to provoke fear in the enslaved to repay their cost. to harden the enslaved and ready them for auction.
It’s known as a composite volcano
Dude on top is right^^
I do not think so. what other technology could we use.
By people sailing or drifting from southeast Asia