Edward III lived until 1377. Through his long reign of half a century, during which he was entirely dependent on the grants of Parliament for the funds needed to carry on the war against France, this body obtained the powers, privileges, and organization which made it thereafter such an influential part of the government. His successor, Richard II, after a period of moderate government tried to rule with a high hand, but in 1399 was deposed through the influence of his cousin, Henry of Lancaster, who was crowned as Henry IV. Henry's title to the throne, according to hereditary principles, was defective, for the son of an older brother was living. He was, however, a mere child, and there was no considerable opposition to Henry's accession. Under the Lancastrian line, as Henry IV, Henry V, and Henry VI, who now reigned successively, are called, Parliament reached the highest position which it had yet attained, a position higher in fact than it held for several centuries afterward. Henry VI was a child at the death of his father in 1422. On coming to be a man he proved too mild in temper to control the great nobles who, by the chances of inheritance, had become almost as powerful as the great feudal barons of early Norman times. The descendants of the older branch of the royal family were now represented by a vigorous and capable man, the duke of York. An effort was therefore made about 1450 by one party of the nobles to depose Henry VI in favor of the duke of York. A number of other nobles took the side of the king, and civil war broke out. After a series of miserable contests known as the "Wars of the Roses" the former party was successful, at least temporarily, and the duke of York became king in 1461 as Edward IV. *28. The Black Death and its Effects.*--During the earlier mediaeval centuries the most marked characteristic of society was its stability. Institutions continued with but slight changes during a long period. With the middle of the fourteenth century changes become more prominent. Some of the most conspicuous of these gather around a series of attacks of epidemic disease during the latter half of the century. [Illustration: Distribution of Population According to the Poll-tax of 1377. Engraved by Bormay & Co., N.Y.]