Answer:
The city. Medieval society was based on feudalism, but eventually people started living in cities, enabling craftsmen and artisans to make a living, and lessening the dependance on the noble class for protection.
Explanation:
An even-textured limestone composed almost wholly of relatively uniform calcareous ooliths, with virtually no interstitial material. It is locally an important oil reservoir such as: the Smackover Formation in Arkansa, and is also quarried for building stone.
B: Because new methods in farming led to changes in living arrangements, which led to changes in politics and religion.
Explanation: The Neolithic Revolution which initiated in 10000 BC, transformed humanity from its prior status as hunters and gathers to a more stabilized lifestyle as advances in agriculture allowed for settlement and the roots for civilization as concentration of the population and population as a whole dramatically increased during this time frame.
Indentured servitude was a system of labor used by England during the era of colonization. During the 17th century, many plantation/farm owners in the North American continent would pay for the trip of another male in England so that they would come to North America to work on their farm. In order to pay back the farm owner, these indentured servants would work 4-7 years on the farm/plantation of the person who paid for their trip. After that time was up, these servants would receive their own land.
This system was used throughout the 17th century but became unpopular after Bacon's Rebellion. After this rebellion lead by many former indentured servants, English colonists turned to slave labor instead. The cost of slaves was cheaper and it was easier to control these people, as they were considered property and had almost no legal rights.