The various countries of the world are interconnected through trade and through exchange of thoughts and cultures. The interconnectedness has increased dramatically in recent times but the world was also interconnected even during the days of Indus Valley Civilisation.
The trade route which linked China to the western world and to other countries is called Silk Route. There were many Silk Routes. The Silk Routes existed before the Christian Era, and persisted till the fifteenth century.
Noodles travelled from China to different parts of the world. The sevian; which are used in India are localized form of noodle. Similarly, spaghetti of Italy is the European version of noodles.
The European sailors discovered the sea route to Asia and Americas in the sixteenth century. The discovery of new sea route not only helped in expanding the trade but also in European conquest over other parts of the world.