Question:
Manorialism was an essential element of feudal society. It was the organizing principle of rural economy that originated in the Roman villa system of the Late Roman Empire, and was widely practiced in medieval western and parts of central Europe. It was slowly replaced by the advent of a money-based market economy and new forms of agrarian contract. Manorialism was characterised by the vesting of legal and economic power in a Lord of the Manor, supported economically from his own direct landholding in a manor (sometimes called a fief), and from the obligatory contributions of a legally subject part of the peasant population under the jurisdiction of himself and his manorial court.
The term is most often used with reference to medieval Western Europe. Antecedents of the system can be traced to the rural economy of the later Roman Empire (Dominate). With a declining birthrate and population, labor was the key factor of production. Successive administrations tried to stabilise the imperial economy by freezing the social structure into place: sons were to succeed their fathers in their trade, councilors were forbidden to resign, and coloni, the cultivators of land, were not to move from the land they were attached to. The workers of the land were on their way to becoming serfs.  Several factors conspired to merge the status of former slaves and former free farmers into a dependent class of such coloni: it was possible to be described as servus et colonus, "both slave and colonus". Laws of Constantine I around 325 both reinforced the semi-servile status of the coloni and limited their rights to sue in the courts; the Codex Theodosianus promulgated under Theodosius II extended these restrictions. The legal status of adscripti, "bound to the soil", contrasted with barbarian foederati, who were permitted to settle within the imperial boundaries, remaining subject to their own traditional law.  As the Germanic kingdoms succeeded Roman authority in the West in the fifth century, Roman landlords were often simply replaced by Germanic ones, with little change to the underlying situation or displacement of populations.  The process of rural self-sufficiency was given an abrupt boost in the eighth century, when normal trade in the Mediterranean Sea was disrupted. The thesis put forward by Henri Pirenne, while disputed widely, supposes that the Arab conquests forced the medieval economy into even greater ruralization and gave rise to the classic feudal pattern of varying degrees of servile peasantry underpinning a hierarchy of localised power centers.
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How much of society was involved in manorialism?

Answer:
it was possible to be described as servus et colonus, "both slave and colonus".

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Vieira was born in Providence, Rhode Island, and raised in nearby East Providence, the daughter of Mary Elsie (Rosa), a homemaker, and Edwin Vieira, a medical doctor, both first-generation Portuguese Americans. She is the youngest of four children, with three older brothers. All four of Vieira's grandparents came from the Azores--three from Faial Island, one of the nine islands in the archipelago. The family name
Vieira became the first host of the American syndicated version of Who Wants to Be a Millionaire on September 16, 2002; prior to that, American audiences had known it as a primetime show on ABC hosted by Regis Philbin. Rosie O'Donnell (who would later succeed Vieira on The View) was originally offered to host the syndicated version, but rejected it almost immediately. Vieira won two Daytime Emmy Awards for Outstanding Game Show Host for her hosting duties on Millionaire (one in 2005, the other in 2009); as such, she is the second woman ever to win an Emmy Award in this category (after Betty White for Just Men! in 1983), and the first to win multiple times. In addition to hosting the show, Vieira also served as its co-executive producer, a title that she would hold from 2005 until her departure from the show.  ABC originally offered Vieira hosting duties on the syndicated Millionaire to sweeten one of her re-negotiations for The View. When the show was honored by GSN on its 2007 Gameshow Hall of Fame special, one of the show's executive producers, Leigh Hampton, said that when the syndicated version was being developed, the production team felt that it was not feasible for Philbin to continue hosting, as the show recorded four episodes in a single day, and that the team was looking for qualities in a new host: it had to be somebody who would love the contestants and be willing to root for them. After O'Donnell declined the opportunity to host the syndicated version, Vieira was the one that the team settled on, because she had the above-mentioned qualities. On the special, Vieira herself gave the following explanation for why she decided to host the syndicated Millionaire:  I did the show because I fell in love with the show, and really, first and foremost, as a parent, [I feel that] there aren't that many shows on television that you can watch as a family. And when [the U.S. version's executive producer] Michael Davies approached me and said, "Would you be interested in hosting the syndicated version?", I said, "Just point me toward the contract! I am so there!"  Prior to hosting the syndicated version of Millionaire, Vieira was a celebrity contestant in a special tournament on the third season of the original primetime version, winning $250,000 for her selected charitable organization, the Windows of Hope Family Relief Fund. Seven and three-quarter years later, she would even turn the tables on Philbin himself with her surprise appearance on the finale of the show's 10th anniversary primetime revival on August 23, 2009--hosting its final segment while giving him the opportunity to answer one question in order to win $50,000 for his selected organization, Cardinal Hayes High School in the Bronx.  On January 10, 2013, Vieira announced that after eleven seasons with the syndicated Millionaire, throughout which she had hosted more than 1,800 episodes and offered a vast multitude of contestants a combined total of over $70,000,000, she would be leaving the show as part of an effort to focus on other projects in her career. She finalized taping of her last episodes with the show in November 2012.

How did she get the spot on Who Wants to Be a Millionaire?
Vieira became the first host of the American syndicated version of Who Wants to Be a Millionaire on September 16, 2002;