The tumult of the English Civil War led the term to be taken up in political philosophy. Anarchy was one of the issues at the Putney Debates of 1647:
As people began to theorise about the English Civil War, Anarchy came to be more sharply defined, albeit from differing political perspectives:
Anarcho-Capitalist Murray Rothbard wrote in his work on early American history Conceived in Liberty that Pennsylvania fell into Anarchism after William Penn's original government collapsed.[7]
During the French Revolution, the period of brutal violence in which many members of high-ruling families were killed has been described as anarchy. The reign of terror was mainly conducted by the radical egalitarian wing of the revolution. Targets were not only aristocrats but also fellow revolutionaries who were deemed too moderate, and were sent to guillotine. Thomas Carlyle, Scottish essayist of the Victorian era known foremost for his widely influential work of history, The French Revolution, wrote that the French Revolution was a war against both aristocracy and anarchy:
Meanwhile, we will hate Anarchy as Death, which it is; and the things worse than Anarchy shall be hated more! Surely Peace alone is fruitful. Anarchy is destruction: a burning up, say, of Shams and Insupportabilities; but which leaves Vacancy behind. Know this also, that out of a world of Unwise nothing but an Unwisdom can be made. Arrange it, Constitution-build it, sift it through Ballot-Boxes as thou wilt, it is and remains an Unwisdom,-- the new prey of new quacks and unclean things, the latter end of it slightly better than the beginning. Who can bring a wise thing out of men unwise? Not one. And so Vacancy and general Abolition having come for this France, what can Anarchy do more? Let there be Order, were it under the Soldier's Sword; let there be Peace, that the bounty of the Heavens be not spilt; that what of Wisdom they do send us bring fruit in its season!-- It remains to be seen how the quellers of Sansculottism were themselves quelled, and sacred right of Insurrection was blown away by gunpowder: wherewith this singular eventful History called French Revolution ends.[8]
Armand II, duke of Aiguillon came before the National Assembly (French Revolution) in 1789 and shared his views on the anarchy:
I may be permitted here to express my personal opinion. I shall no doubt not be accused of not loving liberty, but I know that not all movements of peoples lead to liberty. But I know that great anarchy quickly leads to great exhaustion and that despotism, which is a kind of rest, has almost always been the necessary result of great anarchy. It is therefore much more important than we think to end the disorder under which we suffer. If we can achieve this only through the use of force by authorities, then it would be thoughtless to keep refraining from using such force.[9]
Armand II was later exiled because he was viewed as being opposed to the revolution's violent tactics.
Professor Chris Bossche commented on the role of anarchy in the revolution:
In The French Revolution, the narrative of increasing anarchy undermined the narrative in which the revolutionaries were striving to create a new social order by writing a constitution.[10]
Sir Nicholas Lawes, Governor of Jamaica, wrote to John Robinson, the Bishop of London, in 1720:
In the letter Lawes goes on to complain that these "estated men now are like Jonah's gourd" and details the humble origins of the "creolians" largely lacking an education and flouting the rules of church and state. In particular, he cites their refusal to abide by the Deficiency Act, which required slave owners to procure from England one white person for every 40 enslaved Africans, thereby hoping to expand their own estates and inhibit further English/Irish immigration. Lawes describes the government as being "anarchical, but nearest to any form of Aristocracy". "Must the King's good subjects at home who are as capable to begin plantations, as their Fathers, and themselves were, be excluded from their Liberty of settling Plantations in this noble Island, for ever and the King and Nation at home be deprived of so much riches, to make a few upstart Gentlemen Princes?"[11]
After General Francisco Franco declared war on the Spanish government in 1936 (Spanish civil war) the government lost control over much of Spain. Resistance to the rebels was often organized through the confederation of anarcho-syndicalist trade unions, the Confederación Nacional del Trabajo (CNT) and the Iberian Anarchist Federation, the Federación Anarquista Ibérica (FAI). The Spanish Revolution occurred almost immediately after the failed coup of Franco, leading to the formation of worker's collectives all over Republican Spain. This has been hailed as the best example of a functioning anarchist system. Anarchists were instrumental in keeping the country running and holding back the Francoists, until they were attacked by the Republican government and their Communist allies. The government was subsequently defeated by Franco, leading to 40 years of Francoist dictatorship in Spain.
Before the Islamic Courts Union took control, large parts of southern Somalia were effectively functioning without a central government. However, an economic survey by the World Bank found that distribution of wealth in the country was more equitable, and the extent of extreme poverty was lower than that found in nominally more stable West African nations. According to the same paper, although southern Somalia was effectively operating without a federal government before the rise to prominence of the Islamic Courts Union, it was not an anarchist society in the sense that society was more or less chaotic than organized non-coercively.[12] Despite this, a libertarian think tank reported that living standards in Somalia increased – in absolute terms, relative to the pre-Somali Civil War era, and relative to other nations in Africa – during this period.[13]