How and with whom did feudalism develop into a system that ordered people’s lives in the Middle Ages?

Under the feudal system land was granted to people for service. It started at the top with the king granting his land to a baron for soldiers all the way down to a peasant getting land to grow crops. The center of life in the Middle Ages was the manor. The manor was run by the local lord.

Explanation:

Feudalism, also called feudal system or feudality, French féodalité, historiographic construct designating the social, economic, and political conditions in western Europe during the early Middle Ages, the long stretch of time between the 5th and 12th centuries. Feudalism and the related term feudal system are labels invented long after the period to which they were applied. They refer to what those who invented them perceived as the most significant and distinctive characteristics of the early and central Middle Ages. The expressions féodalité and feudal system were coined by the beginning of the 17th century, and the English words feudality and feudalism (as well as feudal pyramid) were in use by the end of the 18th century. They were derived from the Latin words feudum (“fief”) and feodalitas (services connected with the fief), both of which were used during the Middle Ages and later to refer to a form of property holding. Use of the terms associated with feudum to denote the essential characteristics of the early Middle Ages has invested the fief with exaggerated prominence and placed undue emphasis on the importance of a special mode of land tenure to the detriment of other, more significant aspects of social, economic, and political life.

Explanation:

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.