Our different culture and different lifestyle have come from the different contribution from the past to the present. In the field of transportation, they created the wheel, sail and developed the farming. In the realm of mathematics, the Sumerian created numerical system called the sexagismal system. In the architecture, bricks are also developed. Then came the civilization of Mesopotamia and Egypt. The Mesopotamia was focused in the farming and livelihood of the people. Beyond the basic needs of Egyptians, they’ve written number system. They also created a calendar based on the star Sirius which takes 365 days and is divided by 12 months.