Irrigation of crops led to salinization of the soil, Sumer was located on a flat plain that provided no natural barriers to invasion, and the land became too swampy to grow adequate crops.
Pretty sure it was Kentucky
Answer:
B when south Carolina fired on Fort sumter
In medieval Europe, a code of ethics known as chivalry developed which included rules and expectations that had the nobility.
<h3>What is medieval chivalry?</h3>
Chivalry was first developed as a code of honor that emphasized bravery, loyalty, and generosity for knights at medieval chivalry wars in the 11th and 12th centuries. By the later Middle Ages, illuminated manuscripts had helped establish chivalry as a system of values that permeated almost every Chivalry aspect of aristocratic culture. very polite, honest, and kind behavior, especially by men toward women. the system of behavior followed by knights in the medieval period of history, put a high value on honor, kindness, and courage: the age of chivalry. The Arthurian legend revolves around the Code of Chivalry which was adhered to by the Knights of the Round Table- Honour, Honesty, Valour, and Loyalty.
So we can conclude that Chivalry originally referred to the medieval knight's code of honor but today references a range.
Learn more about chivalry here: brainly.com/question/27866094
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