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In the United States, botanist Asa Gray an American colleague of Darwin negotiated with a Boston publisher for publication of an authorised American version, but learnt that two New York publishing firms were already planning to exploit the absence of international copyright to print Origin. Darwin was delighted by the popularity of the book, and asked Gray to keep any profits. Gray managed to negotiate a 5% royalty with Appleton's of New York, who got their edition out in mid January 1860, and the other two withdrew. In a May letter, Darwin mentioned a print run of 2,500 copies, but it is not clear if this referred to the first printing only as there were four that year.

When was the first American edition of On the Origin of Species published?
Answer: mid January 1860
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Collectively encompassing more than 900 million adherents, or nearly forty percent of Christians worldwide, Protestantism is present on all populated continents.[t] The movement is more divided theologically and ecclesiastically than either Eastern Orthodoxy or Roman Catholicism, lacking both structural unity and central human authority. Some Protestant churches do have a worldwide scope and distribution of membership (notably, the Anglican Communion), while others are confined to a single country, or even are solitary church bodies or congregations (such as the former Prussian Union of churches). Nondenominational, evangelical, independent and other churches are on the rise, and constitute a significant part of Protestant Christianity.

What percentage of Christians are Protestant?
Answer: nearly forty percent
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The European Revolutions of 1848, known in some countries as the Spring of Nations or the Year of Revolution, were a series of political upheavals throughout the European continent. Described as a revolutionary wave, the period of unrest began in France and then, further propelled by the French Revolution of 1848, soon spread to the rest of Europe. Although most of the revolutions were quickly put down, there was a significant amount of violence in many areas, with tens of thousands of people tortured and killed. While the immediate political effects of the revolutions were reversed, the long-term reverberations of the events were far-reaching.

What are European revolutions known as in other countries?
Answer:
Spring of Nations or the Year of Revolution