There once was a family which included a father who had 3 sons.
The 3 sons hated each other and often were in arguments with one another.
So the father decided to teach them a lesson by giving them a challenge.He gave each of his sons a single stick and asked them to break it.They were able to complete this task with ease.
Then the father gave them a bundle of sticks and told them to break it.None of them were able to complete this task.
And so the father told them that strength lies in unity. And that if you stick together there is no one that can break you apart.
And after that lesson the relationship between his 3 sons grew stronger and they no longer had arguments and instead helped each other.