Problem: Background: Chesley Sullenberger was born in Denison, Texas, His father was a descendant of Swiss-German immigrants named Sullenberger. He has one sister, Mary. The street on which he grew up in Denison was named after his mother's family. According to his sister, Sullenberger built model planes and aircraft carriers during his childhood, and says he became interested in flying after seeing military jets from an Air Force base near his house.
Context: Sullenberger was appointed to the United States Air Force Academy, entering with the Class of 1973 in June 1969. He was selected along with around a dozen other freshmen for a cadet glider program, and by the end of that year, he was an instructor pilot. In the year of his graduation, 1973, he received the Outstanding Cadet in Airmanship award, as the class "top flyer". Following graduation with a Bachelor of Science and his commissioning as an officer, the Air Force immediately sent Sullenberger to Purdue University to pursue a master's degree prior to entering Undergraduate Pilot Training (UPT).  Following completion of his graduate degree at Purdue, he was assigned to UPT at Columbus AFB, Mississippi, flying the T-37 Tweet and T-38 Talon. After earning his wings in 1975 as a USAF Pilot, he completed replacement training in the F-4 Phantom II at Luke AFB, Arizona. This was followed by his assignment to the 493d Tactical Fighter Squadron of 48th Tactical Fighter Wing at RAF Lakenheath, United Kingdom, where he flew as a United States Air Force fighter pilot in the F-4D Phantom II.  Following his assignment at RAF Lakenheath, he was reassigned to the 428th Tactical Fighter Squadron of the 474th Tactical Fighter Wing at Nellis AFB, Nevada, again flying the F-4D. He advanced to become a flight leader and a training officer, and attained the rank of captain, with experience in Europe, the Pacific, and at Nellis Air Force Base, as well as operating as Blue Force Mission Commander in Red Flag Exercises. While in the Air Force, he was a member of an aircraft accident investigation board.
Question: Which incidents did Chesley investigate?
Answer: 

IN: Elizabeth of York (11 February 1466 - 11 February 1503) was queen consort of England from 1486 until her death. As the wife of Henry VII, she was the first Tudor queen. She was the daughter of Edward IV and niece of Richard III, and she married the king following Henry's victory at the Battle of Bosworth which started the last phase of the Wars of the Roses. She was the mother of King Henry VIII.

Elizabeth's mother made an alliance with Lady Margaret Beaufort, mother of Henry Tudor, later King Henry VII, who had the closest claim to the throne of those in the Lancastrian party. Although Henry Tudor was descended from King Edward III, his claim to the throne was weak, due to an act of parliament passed during the reign of Richard II in the 1390s, that barred accession to the throne to any heirs of the legitimised offspring of Henry's great-great-grandparents, John of Gaunt and Katherine Swynford. Despite this, his mother and Elizabeth Woodville agreed Henry should move to claim the throne and, once he had taken it, marry Elizabeth of York to unite the two rival houses. In December 1483, in the cathedral in Rennes, Henry Tudor swore an oath promising to marry her and began planning an invasion.  In 1484, Elizabeth of York and her sisters left Westminster Abbey and returned to court when Elizabeth Woodville was reconciled with Richard III, which may suggest that Elizabeth Woodville believed Richard III to be innocent of any possible role in the murder of her two sons (although this is unlikely owing to her involvement in Henry Tudor's failed invasion of October 1483). It was rumoured that Richard III intended to marry Elizabeth of York because his wife, Anne Neville, was dying and they had no surviving children. The Crowland Chronicle claimed that Richard III was forced to deny this unsavoury rumour. Soon after Anne Neville's death, Richard III sent Elizabeth away from court to the castle of Sheriff Hutton and opened negotiations with King John II of Portugal to marry his sister, Joan, Princess of Portugal, and to have Elizabeth marry their cousin, the future King Manuel I of Portugal.  On 7 August 1485, Henry Tudor and his army landed in Wales and began marching inland. On 22 August 1485, Henry Tudor and Richard III fought the Battle of Bosworth Field. Richard III, despite having the larger army, was betrayed by one of his most powerful retainers, William Stanley, and died in battle. Henry Tudor took the crown by right of conquest as Henry VII.

Did she marry Richard III?

OUT: Soon after Anne Neville's death, Richard III sent Elizabeth away from court to the castle of Sheriff Hutton and

Background: 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.
Context: 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.
Question: What was the expected outcome of this distribution?
Answer:
Several factors conspired to merge the status of former slaves and former free farmers into a dependent class of such coloni: