Past helps us in understanding our present world in a much better way. If we know how our ancestors lived or why the wars were waged, we can understand the today’s world better and get ideas for a fairer future. What appears to us as wrong today could have been right earlier. It is also interesting to know how inventions in the past improved the life of humans. Some major inventions that changed the way we live are: metal processing that was invented around 5000 BC and the invention of the calendar, without which we cannot determine when the important events happened in the past.
