natural right was subject to intense debate because the right to vote depended on property ownership. Political freedom was at the time associated with property ownership and individual independence. Cromwell and Ireton maintained that only property in freehold land or chartered trading rights gave a man the right to vote. They argued that this type of property ownership constituted a "stake in society", which entitles men to political power. In contrast, Levellers argued that all men who are not servants, alms-recipients or beggars should be considered as property owners and be given voting rights. They believed that political freedom could only be secured by individuals, such as craftsmen, engaging in independent economic activity. Levellers were primarily concerned with the civil and political rights of small-scale property owners and workers, whereas the Diggers, a smaller revolutionary group led by Gerrard Winstanley, focused on the rights of the rural poor who worked on landed property. The Diggers argued that private property was not consistent with justice and that the land that had been confiscated from the Crown and Church should be turned into communal land to be cultivated by the poor. According to the Diggers, the right to vote should be extended to all and everybody had the right to an adequate standard of living. With the Restoration of the English monarchy in 1660, all confiscated land returned to the Crown and Church. Some property rights were recognised and limited voting rights were established. The ideas of the Levellers on property and civil and political rights remained influential and were advanced in the subsequent 1688 Glorious Revolution, but restrictions on the right to vote based on property meant that only a fraction of the British population had the suffrage. In 1780 only 214,000 property-owning men were entitled to vote in England and Wales, less than 3 percent of the population of 8 million. The Reform Act 1832 restricted the right to vote to men who owned property with an annual value of £10, giving approximately 4 percent of the adult male population the right to vote. The reforms of 1867 extended the right to vote to approximately 8 percent. The working class (which increased dramatically with the Industrial Revolution) and industrialists remained effectively excluded from the political system. John Locke and the American and French revolutions The English philosopher John Locke (1632–1704) developed the ideas of property, civil and political rights further.