What were the big problems 14th and 15th centuries

 The crisis of the Late Middle Ages was a series of events in the fourteenth and fifteenth centuries that brought centuries of European prosperity and growth to a halt. Three major crises led to radical changes in all areas of society: demographic collapse, political instabilities and religious upheavals.

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Lower Egypt is the northern region and was located downriver. Both united by King Menes, climate is more mild in upper Egypt, and most food was from lower Egypt because the Nile Delta is located there next to the Mediterranean Sea.

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