The 1850s are among the richest in terms of Marx's work across its multiple dimensions. Political action and analysis in the aftermath of revolution, social and economic articles related to the dynamics of the international map, thorough studies for the intended work of the critique of political economy, as well as dense correspondence with well-known figures and collaborators – frame Marx's activities as a resident of London.

During this decade, several classic works of Marxist literature are composed, such as "The Class Struggles in France from 1848 to 1850," "The Eighteenth Brumaire of Louis Bonaparte," and "The Revelations about the Trial of the Communists in Cologne," which are included in a new translation and editing in this anthology. Many other texts are published for the first time in Greece, such as, among others, the series of articles on the parliamentary elections in England in 1852, on Palmerston in 1853, on the rebelling Spain in 1854, on China and the Opium War, on India and the Sepoy Revolts, on Tsarist Russia and its political ambitions.

Those who lament the lack of a 'political theory' in Marx's work will have every opportunity to revise this view, as the material contained here – analysis of political systems, analysis of revolutionary processes – reveals a particularly interesting aspect of Marx's critique. The analyses of international politics are combined in the article work with analyses of international economics, which include the economic support mechanism of Louis Bonaparte with the Crédit Mobilier company, as well as the activities of the Bank of England.

For the first time, the handwritten notes of Marx from 1857 for a new critique of Bruno Bauer are also published – a late and particularly characteristic continuation of the critique previously articulated in the German Ideology. Additionally, the selection from the correspondence work, combining letters from Friedrich Engels (as well as his fateful Introduction in 1895 to The Class Struggles in France) opens a spectrum of communication and research interests, forming a privileged starting point for a new engagement with Marx.

In the pages of the new anthology, every reader will undoubtedly find new material and new research perspectives for the most significant critical thinker of modernity. The anthology of the 1850s is included in 2 volumes and 1600 pages, due to the great wealth and scope of Marx's work during this specific period. The edition contains a detailed chronology, 100 works by K. Marx, 25 of his letters, 3 appendices, and detailed indices of names and terms.

The work for the study, translation, and presentation of the anthology was carried out in collaboration with the team of MEGA (Marx Engels Gesamtausgabe) at the Academy of Sciences of Berlin-Brandenburg and, through MEGA, with the International Marx-Engels Foundation (Internationale Marx-Engels-Stiftung ‒ IMES), while for the texts that have not yet been published in the MEGA volumes, only the original publications were considered.