Short Parliament in the context of "Long Parliament"

Oliver Cromwell (25 April 1599 – 3 September 1658) was an English statesman, politician and soldier, widely regarded as one of the most important figures in British history. He came to prominence during the Wars of the Three Kingdoms, initially as a senior commander in the Parliamentarian army and latterly as a politician. A leading advocate of the execution of Charles I in January 1649, which led to the establishment of the Commonwealth of England, Cromwell ruled as Lord Protector from December 1653 until his death.

Although elected Member of Parliament (MP) for Huntingdon in 1628, much of Cromwell's life prior to 1640 was marked by financial and personal failure. He briefly contemplated emigration to New England, but became a religious Independent in the 1630s and thereafter believed his successes were the result of divine providence. In 1640 he was returned as MP for Cambridge in the Short and Long Parliaments. He joined the Parliamentarian army when the First English Civil War began in August 1642 and quickly demonstrated his military abilities. In 1645 he was appointed commander of the New Model Army cavalry under Thomas Fairfax, and played a key role in winning the English Civil War.

The First English Civil War took place in England and Wales from 1642 to 1646, and forms part of the 1639 to 1653 Wars of the Three Kingdoms. An estimated 15% to 20% of adult males in England and Wales served in the military at some point between 1639 and 1653, while around 4% of the total population died from war-related causes. These figures illustrate the widespread impact of the conflict on society, and the bitterness it engendered as a result.

Conflict over the role of Parliament and religious practice dated from the accession of James VI and I in 1603. These tensions culminated in the imposition of Personal Rule in 1629 by his son, Charles I, who recalled Parliament in April and November 1640. He hoped by doing so to obtain funding that would enable him to reverse his defeat by Scots Covenanters in the Bishops' Wars, but in return Parliament demanded a greater share in government than he was willing to concede.

The Personal Rule (also known as the Eleven Years' Tyranny) was a period in the history of England from the dissolution of the third Parliament of Charles I in 1629 to the summoning of the Short Parliament in 1640, during which the King declined to call the next parliament and ruled as an autocratic absolute monarch without recourse to Parliament. Charles claimed that he was entitled to do this under the royal prerogative and that he had a divine right.

Charles had called three Parliaments by the third year of his reign in 1628. After the murder of George Villiers, Duke of Buckingham, who was deemed to have a negative influence on Charles' foreign policy, Parliament began to criticize the king more harshly than before. Charles then realised that, as long as he could avoid war, he could rule without the need of Parliament.