Man, through the ages, has undergone many changes from the time when he lived in the caves to nowadays when he lives in a comfortable apartment. But one thing that remains the same is that people always lived in groups and organizations such as families, the smallest group, and tribes, the bigger group. I think that the reason why people live in groups is because we need communication and what is more important we need support to survive. So, from old times to nowadays people merged in groups because it made them stronger and helped to overcome many obstacles and difficulties. In the following paragraphs I will give my reasons and examples to support my answer.
First of all, people need to communicate with each other. We need to share out ideas and thoughts with each other. I think it is very important to know that someone think the same way one does and supports one. In addition, communication is one of the features of reasonable animals. All animals that can communicate with each other live in herds and support each other when one of them is in need.
The second reason, why I think groups and organization are important to people is because they make us stronger. For example, football team plays better then one player. Another example is the ancient hunters. At old times people gathered in order to get food and survive in severe conditions. It was impossible for one man to kill a big animal, but when people gathered in groups their chances increased. Scientists say that people survived because they lived together and supported each other.
For the reasons, which I mentioned above, I believe groups and organizations play an essential role in our life. Moreover, people's evolution would not be possible without them.