Q) Discuss the achievements in the areas of transport and quantitative science during the Bronze Age.
Ans)Transport
River valley civilizations were characterized by settlements settlements along rivers which needed among another things, stones and wood form distant places to make houses and monuments. The desire to control large territories led to the need for efficient transport. Since the rivers were easy flowing, water transport was most probably developed first. Dugout canoes and rafts made of reed and bamboo were used for carrying goods in bulk. The sail was invented marking the first use of inanimate use of locomotion. The river went in a known direction, it was like a road, but one could easily loose one's way on high seas. New ways of finding location and direction had to be searched. The most primitive method was of the land finding bird. Navigation by sun and stars had become a common practice. Tree trunks came in handy as rollers. The discovery of wheel revolutionized land transport, though it is not possible for us to say, from historic evidence, where the wheel was first invented. Its use for making carts which transported goods and passengers was possibly one of the most significant developments of the bronze age. The real ingenuity in developing this means of transport was in joining the solid roller or wheel to the body of the cart in such a way that it could turn without coming off.
Quantitative Science
Writing developed, either as a sketched symbol standing for a whole idea in Chinese, or symbols and sounds going together as in Mesopotamian Cuneiform or the Egyptian hieroglyphics. The standardization of exchange in the form of weight led to the use of balance, a scientific invention of great consequence. Exchange also necessitated simple calculations such as addition and subtraction of numbers, which led to arithmetic. The use of bricks for building houses gave rise to the ideas of right angle and the straight line which led to the birth of what we call geometry. The practice of building in brick also gave rise to the concept of areas and volumes of figures and solids, which could be calculated from the length of their sides. At first only the volume of rectangular blocks can be estimated. Later in Egypt, mathematics became sufficiently advanced to make it possible to calculate the volume of the pyramid. The ability to count and calculate found immediate use in certain areas such as making of calendars and in the consequent development of astronomy. Another occupation that came to be very prestigious with the growth of cities was that of medicine. The basis for chemistry was laid in the observations and practices of jwellers, metal workers and potters. They knew about at least nine chemical elements-gold, silver, tin, lead, mercury, iron sulphur, and also about a variety of dry and liquid reagents.