Skip to main content

How was trade done earlier?


The Stone Age man was not aware of any trading. They hunted for their own requirements, later they started cultivating fields. When the wild animals became scarce in a particular area or the crop was bad, tribes moved forwards. Eventually, people came across the other groups that cultivated and produced different things--an exchange of goods started. For the exchange of goods, the value of the goods had to be determined. This could not be done without numbers, measures, and weights. Scales and calculating devices such as the Abacus were invented, the trading activity expanded and a real triangular trade arose.


Who invented the numbers?

The first written number system is about 5o0o years old and comes from the Sumerians in Mesopotamia. But man wanted to specify quantities even much earlier: of the animals killed or of mushrooms. In the beginning, man counted using the finger joints on each hand. Even today, young children are taught to count on their fingers. It is known about the Stone Age man that he used tallies by cutting notches in wood, bones, and stones. Similar tally sticks were even used in England till the 19th century.


How does an abacus work?

Abacus is the most ancient tool used for the purpose of calculations. It consists of a frame with rods or wires, on which spheres are beaded. The value of the spheres depends on the rod, on which they are beaded: units, tens, hundreds, and so on. By moving the balls one can do the four simple mathematical operations as well as more difficult calculations. The result can then be read from the position of the balls. Abacus is used even today in some countries of retailers, such as China and Russia.


What is triangular trade?

Triangular trade means trading through a third party. There is no direct exchange between two trading partners. Instead, dealers buy the goods from an overseas market and sell them in the home market to the consumer. They are, therefore, an intermediary between the manufacturer and the consumer and make a living from the profit made by selling the goods. The term triangular trade is often associated with the trading of slaves in the 18th century: Europeans traveled to Africa with goods like weapons, cloth, and salt bought slaves in return, and sold them in America in exchange for cane Sugar products such as rum.


Who invented the scale?

In 5ooo BC, the Egyptians were the first people to build the beam balance and weigh goods. Pans hung from both ends of a balance beam. In one pan the load to be weighed was placed, and in the second pan, the weights were put, until both the pans were perfectly balanced. The earliest and the smallest unit of weight was a grain of wheat and it was used to weigh gold. The steelyard has been used as a weighing device since 20oo BC. It has two arms of different lengths and uses a counterweight that slides along the calibrated longer arm to counterbalance the load on the other arm and indicate its weight.


How were distances measured?

In ancient times, the Egyptians and the Babylonians used their body parts as measurement tools. A very old unit of measurement is the cubit: It is the length from the elbow to the tip of the middle finger. Smaller lengths were specified by the length of a finger or the span of the palm-this is the stretched hand from the tip of the thumb to that of the little finger. The foot was also used to measure distances-just as the step and the double step. The Romans also used these measures. A Roman mile had a thousand double steps, and each double step measured five Roman feet.


Popular posts from this blog

Is Our Brain Bigger Than That of the Dinosaurs?

  What Differentiates Humans from Animals Biologists classify humans as animals and part of the animal kingdom. Like our nearest relatives, the apes, humans are also mammals. Humans have evolved from apes, but there are features that differentiate us from other animals- including apes. These include the upright walk, our opposable thumb, our special ability to communicate by a language, and our highly developed brain. Our brain allowed our ancestors, like the Neanderthals , to invent tools.   Did humans evolve from apes? Today, one can think of humans and apes as cousins. They have common ancestors, but have not descended directly from each other. About 5-7 million years ago, a line of man-like apes grew apart, and evolved independently of the other apes. The oldest, almost completely intact skeleton of an upright ancestor of human- the Australopithecus - was found in 1974 in Ethiopia (Africa). The scientists named it ‘ Lucy’ .   Do animals use tools? Animals do make use o


  Do all children have families? Earlier, most people lived in joint families. Children who had lost their parents stayed with their relative as part of their family. In today’s lifestyle, when there are fewer joint families, it is difficult for orphaned children to become part of a family. That is why there are orphanages to take care of these children, and some lucky ones are adopted and hence they find a new home. In a family the children are protected and given emotional and financial support. Apart from having a family, it is also important to have friends.     Why some parents are married and others are are not? Many couples prefer to get married, and then have children. Others do not marry, and live happily together with their children. In some cases, the parents get divorced and live separately. The children then live with one of the parents. If the parent finds a new partner, who may also have children, they often make a new family together.   What is a joint famil

How do we discover what is inside the Earth?

What is the external structure of Earth? It has been known for more than 2000 years that the Earth is round, but we were able to actually see this much later only when we flew into space. The knowledge why we do not fall off from Earth is much more recent. A journey as describes by author Jules Verne in his book Journey to the center of the earth was, after all, impossible. Only one thing was known: The earth is made up of soil, rocks and water. Today, we know that the Earth is also surrounded by an air cover called the atmosphere.   What is the internal structure of earth? Like an onion, the Earth has several layers. The outermost layer, the Earth’s crust, has an average depth of about 40km. As compared to the diameter of Earth, which is around 12,700 km, the crust is very small. It is primarily made up of solid rocks. Below the crust is the solid mantle, reaching to a depth of about 2900 km. due to the heat inside the Earth, the mental consists of solid and molten rocks. Belo