In 1954, major Serbian and Croatian writers, linguists and literary critics, backed by Matica srpska and Matica hrvatska signed the Novi Sad Agreement, which in its first conclusion stated: "Serbs, Croats and Montenegrins share a single language with two equal variants that have developed around Zagreb (western) and Belgrade (eastern)". The agreement insisted on the equal status of Cyrillic and Latin scripts, and of Ekavian and Ijekavian pronunciations. It also specified that Serbo-Croatian should be the name of the language in official contexts, while in unofficial use the traditional Serbian and Croatian were to be retained. Matica hrvatska and Matica srpska were to work together on a dictionary, and a committee of Serbian and Croatian linguists was asked to prepare a pravopis. During the sixties both books were published simultaneously in Ijekavian Latin in Zagreb and Ekavian Cyrillic in Novi Sad. Yet Croatian linguists claim that it was an act of unitarianism. The evidence supporting this claim is patchy: Croatian linguist Stjepan Babić complained that the television transmission from Belgrade always used the Latin alphabet— which was true, but was not proof of unequal rights, but of frequency of use and prestige. Babić further complained that the Novi Sad Dictionary (1967) listed side by side words from both the Croatian and Serbian variants wherever they differed, which one can view as proof of careful respect for both variants, and not of unitarism. Moreover, Croatian linguists criticized those parts of the Dictionary for being unitaristic that were written by Croatian linguists. And finally, Croatian linguists ignored the fact that the material for the Pravopisni rječnik came from the Croatian Philological Society. Regardless of these facts, Croatian intellectuals brought the Declaration on the Status and Name of the Croatian Literary Language in 1967. On occasion of the publication’s 45th anniversary, the Croatian weekly journal Forum published the Declaration again in 2012, accompanied by a critical analysis.
Which agreement was signed in 1954 by writers, linguists, and literary critics?
Novi Sad Agreement

Mexico City is Latin America's leading center for the television, music and film industries. It is also Mexico's most important for the printed media and book publishing industries. Dozens of daily newspapers are published, including El Universal, Excélsior, Reforma and La Jornada. Other major papers include Milenio, Crónica, El Economista and El Financiero. Leading magazines include Expansión, Proceso, Poder, as well as dozens of entertainment publications such as Vanidades, Quién, Chilango, TV Notas, and local editions of Vogue, GQ, and Architectural Digest.
What is one of the main papers of Mexico City?
El Universal

Whitehead and Russell had thought originally that Principia Mathematica would take a year to complete; it ended up taking them ten years. To add insult to injury, when it came time for publication, the three-volume work was so massive (more than 2,000 pages) and its audience so narrow (professional mathematicians) that it was initially published at a loss of 600 pounds, 300 of which was paid by Cambridge University Press, 200 by the Royal Society of London, and 50 apiece by Whitehead and Russell themselves. Despite the initial loss, today there is likely no major academic library in the world which does not hold a copy of Principia Mathematica.
How long did Whitehead and Russell think it would take them to complete Principia Mathematica?
a year