Why necessary of Global Business

The world is getting small due to revolutioney changes in technology as a result of such changes we're watching pulse information of another world staying at our small room. We have to consider the reasons that when we operate our own business at only one place we're able to deal only 100, 200, 500 only but when we deals globally we can deals more than 10,000 peoples at once using emails, or our website presenting their our products. so we have to adopt global business technique to get success in our professions.