Ответ:

The history is the main storage of information. All dates, events and knowledge of the last centuries are carefully collected and written down by erudite historians. Thanks to it we at any time can learn about what happened on our planet. For example, about the one who and as invented the bicycle when Moscow was founded or why America so is called. Without similar records people constantly would forget the opening, and they had to think out all over again.

Besides, the history is the also invaluable experience gained by mankind in centuries.