Short answers, pulled from the story.
Palgrave Macmillan was formed in the year 2000 when St. Martin's Press from the United States joined forces with Macmillan Publishers based in the United Kingdom. The combined organization initially used only the name Palgrave until 2002 before adopting the full title for all future publications.
Sir Francis Palgrave founded the Public Record Office in the nineteenth century while his four sons maintained close ties with what would become Macmillan Publishers. Francis Turner Palgrave published Palgrave's Golden Treasury of the Best Songs and Lyrical Poems in 1861 through Macmillan and Inglis Palgrave edited The Palgrave Dictionary of Political Economy first released by Macmillan in 1894.
London Borough of Camden serves as headquarters for this British academic publisher after operations moved from Basingstoke to the Macmillan campus located at Kings Cross in London in 2014. Additional offices exist across six continents including New York, Shanghai, Melbourne, Sydney, Hong Kong, Delhi, and Johannesburg to support international distribution networks.
Springer Nature now owns Palgrave Macmillan as a subsidiary entity following corporate restructuring that concluded around 2015 when the organization belonged to the Macmillan Group controlled by German firm Holtzbrinck Publishing Group. That same parent group retains controlling interest in Springer Nature today.
By 2009 the company made more than 4,500 scholarly ebooks available to libraries worldwide representing a major shift from traditional print-only distribution models. This expansion included the launch of Palgrave Pivot in 2012 as an imprint focused on shorter monographs covering new research across Humanities and Social Sciences fields.