Integrity and faith in it.
stress
What makes a strong government?
hat makes something strong
the food they eat makes them strong
the shell shape makes it strong.
pkb
it is strong
using facts, examples makes an argument strong
they have fangs, well normal people do too, but they are really strong and too fast to be a regular person.
The wind, because if it is strong it'll dry out your eye fast and you'll have to blink.
Onions have a high acid content and this makes them strong in flavor and makes you cry when cutting them.