I would say catapults also cannons
The castles were used to defend an area.
No. The great stone castles were build by the Normans.
That was the problem, they couldn't. The use of castles changed and battles were fought on open ground where the two armies lined up and then charged. Battles got bigger and the weapons used more powerful as time went on.
They use it to defend them self
Early castles were built of earth and wood covered with plaster. The Normans were the first to make widespread use of masonry in the British Isles in the 11th and 12th centuries.
because weapons destroied them over time
They made the weapons that they had. Of course they knew how to use them!!!!
nuclear weapons
it help because the wood castles were to weak so theNorman's billed stone castles they were harder the wood and would protect more
If by your weapons, you mean ours (earths) weapons, then i only believe nuclear missiles are strong enough to defend us, although it would create havoc it would still be able to defend us long enough. Bullets and tank shots are no use at all. So yes, Earths weapons are strong enough to defend an alien attack.
To kill animals or defend their tribe.
Battlements are to give defenders some cover, yet allow them to see past to use weapons.