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A primary source is the first-hand account of an event (or topic), which stems from individuals who had first-hand encounters with it. Historians use primary sources to analyze and observe raw evidence so that they may properly interpret the past.
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Early humans in East Africa used hammerstones to strike stone cores and produce sharp flakes. For more than 2 million years, early humans used these tools to cut, pound, crush, and access new foods—including meat from large animal
Stone tool marks on this zebra bone look like those made during butchery experiments. Scientists have made experimental stone tools and used them to butcher modern animals. There is a strong similarity between the marks their tools made and the marks on fossil animal bones, indicating that early humans used stone tools to butcher animals by at least 2.6 million years ago.
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The first question which arises in every single mind is "What is technology ?" then only can we move ahead . Technology is basically practical application of applied sciences . It could include the development of machinery . Technology can also be seen as a medium to solve a complex problem . Although science and technology are different things , but they all together go hand in hand. Technology is solution to many problems and taking generation forward. Technology is anything which makes life easy .
Technology has played one of the most important roles in globalization. The IT sector has made the exchange of data easier and safer. Because of technology many things have been made possible like bar codes that have helped in the flow of product information. Technology has introduced many jobs too. Payments have been simplified. Now a person can use his card to pay in a foreign country easily rather than getting confused about the foreign currency. It has helped in making many global platforms for sharing information, facts, figures, solutions. It has brought the biggest market at the fingerprints of buyers and has removed the need of human interaction for shopping. Technology has helped to advance medical science too. Also now a patient's test reports and doctor recommendations can be stored in a hub so that they can be used for past references. One of the most important thing is that it has helped to provide international viewers and customers. Also it has made spreading commercials easier.
The most effective was boycott.