Slave revolts
It means that - in their opinion - a certain war is justified. war can be justified according to agreed conditions, must be declared by a lawful authority fought to prevent worse catastrophe innocent protected
Kennedy did not stop World War Three because it never started. He may have helped prevent another world war but that is hard to determine. It is certain that he did not start one, even though at the time he seemed to bring the US to the brink of war with the USSR. Now, it seem likely that the Russians were no more eager to go to war than the US was.
It is not possible to 'prevent a repeat'. Look at the genocide in Rwanda. The international community did not take the early reports seriously and did nothing to prevent the slaughter of 800,000 Tutsi on racial grounds ...
they used army forces to prevent them
(as in how they tried to satisfy the Plebians and try to prevent them from uprising against the government)
Whipping them and punishing them
By placing a plastic vapor barrier before casting the foundation
Yes
Actually I do not prevent the president from doing anything, but placing judges under his control is not something a president can readily do. Federal judges are appointed for life just to keep them immune from political pressure. They surely do not answer to the president.
Having white servants as well as slaves
To enforce rules for the greater good and prevent anarchy.
slave masters wanted to erase the slave cultural identity
Drums and other musical instruments were outlawed by plantation owners to prevent enslaved individuals from communicating and coordinating uprisings through coded rhythms and messages. This measure was taken to maintain control and prevent the possibility of slave insurrections.
Mainly to prevent fires that might consume the whole house. Also, better ventilation.
Galvanization is the process to prevent rust on certain materials. This process is used on steel and iron by placing a zinc coating on them.
The current of electricity flows well with conductors. So by placing an insulator in the path of the electricity you can stop the current.
KumaraSweet PotatoAubergine/Egg PlantPotatoYou can prevent most of these from going brown by placing them under water.