Passage: Uncle Tom's Cabin; or, Life Among the Lowly, is an anti-slavery novel by American author Harriet Beecher Stowe. Published in 1852, the novel had a profound effect on attitudes toward African Americans and slavery in the U.S. and is said to have "helped lay the groundwork for the Civil War".Stowe, a Connecticut-born teacher at the Hartford Female Seminary and an active abolitionist, featured the character of Uncle Tom, a long-suffering black slave around whom the stories of other characters revolve. The sentimental novel depicts the reality of slavery while also asserting that Christian love can overcome something as destructive as enslavement of fellow human beings.Uncle Tom's Cabin was the best-selling novel of the 19th century and the second best-selling book of that century, following the Bible. It is credited with helping fuel the abolitionist cause in the 1850s. In the first year after it was published, 300,000 copies of the book were sold in the United States; one million copies in Great Britain. In 1855, three years after it was published, it was called "the most popular novel of our day." The impact attributed to the book is great, reinforced by a story that when Abraham Lincoln met Stowe at the start of the Civil War, Lincoln declared, "So this is the little lady who started this great war."  The quote is

Question: How many copies of Uncle Tom's Cabin sold in the US during it's first year after being published?
300,000