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The United States; National Aeronautics and Space Administration was created.
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Answer:
An overseer is a person who supervises a work whereas a sub overseer is the substitute or second in command of an overseer.
Explanation:
In construction, for example, the Civil Overseer supervises the work done by manual laborers. The Civil sub overseer is a basic-level technician. The Civil Overseer and Sub overseer also differ in qualifications. The sub overseer learns from the overseer who is the main and responsible engineer. In the business setting, an overseer can be likened to a Director while the sub overseer is the Manager.
Answer:
Trade was also a boon for human interaction, bringing cross-cultural contact to a whole new level. When people first settled down into larger towns in Mesopotamia and Egypt, self-sufficiency – the idea that you had to produce absolutely everything that you wanted or needed – started to fade. A farmer could now trade grain for meat, or milk for a pot, at the local market, which was seldom too far away. Cities started to work the same way, realizing that they could acquire goods they didn't have at hand from other cities far away, where the climate and natural resources produced different things. This longer-distance trade was slow and often dangerous but was lucrative for the middlemen willing to make the journey. The first long-distance trade occurred between Mesopotamia and the Indus Valley in Pakistan around 3000 BC, historians believe. Long-distance trade in these early times was limited almost exclusively to luxury goods like spices, textiles, and precious metals. Cities that were rich in these commodities became financially rich, too, satiating the appetites of other surrounding regions for jewelry, fancy robes, and imported delicacies. It wasn't long after that trade networks crisscrossed the entire Eurasian continent, inextricably linking cultures for the first time in history. By the second millennium BC, former backwater island Cyprus had become a major Mediterranean player by ferrying its vast copper resources to the Near East and Egypt, regions wealthy due to their own natural resources such as papyrus and wool. Phoenicia, famous for its seafaring expertise, hawked its valuable cedarwood and linens dyes all over the Mediterranean. China prospered by trading jade, spices, and later, silk. Britain shared its abundance of tin.
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