Feudalism was a set of legal and military customs in medieval Europe that flourished between the 9th and 15th centuries. It can be broadly defined as a system for structuring society around relationships derived from the holding of land, known as a fiefdom or fief, in exchange for service or labor.
Ice wedging is the type of weathering. this works because the ice in the crack expands causing the rock to crack or expand even more
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Boats of the Neolithic era were very simple. They were essentially rafts, made of easy to find materials such as wood.
In the Neolithic, there were many cultures that built boats, and sailed across the sea, but mostly for relatively short distances. Interoceanic navigation was essentially null.
Boats of the modern era have evolved a lot. From sailing boats, to large rowing boats like the Viking longships, to mechanical boats of the modern era. This evolution is to be expected since boats are among the first human inventions in history, dating back to thousands of years before the Neolithic Revolution.
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The things all citizens should know about public policy is they gotta know what goal they want in order to know what about society they wanna change
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