Security: It also happens to make a blockchain network more secure so that transactions can remain immutable and users' assets remain safe.

Yes you are right . One more aspect of security is that at times reversal of transactions is carried out to reallocate the funds in case of hacks

.that is two different chains are formed, a new one is formed here because there is no total agreement between everyone on the network.

That's true . Moroerver the new blockchain formed also launches a new token . The token holders of old blockchain are issued same number of tokens on new blockchain too.

You have explained every point in great detail. I wish you good luck for this contest.