Answer the question at the end by quoting:

Harriet Tubman (born Araminta Ross, c. 1822 - March 10, 1913) was an American abolitionist. Born into slavery, Tubman escaped and subsequently made some thirteen missions to rescue approximately seventy enslaved people, family and friends, using the network of antislavery activists and safe houses known as the Underground Railroad. She later helped abolitionist John Brown recruit men for his raid on Harpers Ferry.
Tubman was born Araminta "Minty" Ross to slave parents, Harriet ("Rit") Green and Ben Ross. Rit was owned by Mary Pattison Brodess (and later her son Edward). Ben was held by Anthony Thompson, who became Mary's second husband, and who ran a large plantation near Blackwater River in Madison, Maryland. As with many slaves in the United States, neither the exact year nor place of Araminta's birth is known, and historians differ as to the best estimate. Kate Larson records the year as 1822, based on a midwife payment and several other historical documents, including her runaway advertisement, while Jean Humez says "the best current evidence suggests that Tubman was born in 1820, but it might have been a year or two later." Catherine Clinton notes that Tubman reported the year of her birth as 1825, while her death certificate lists 1815 and her gravestone lists 1820. In her Civil War widow's pension records, Tubman claimed she was born in 1820, 1822, and 1825, an indication, perhaps, that she had only a general idea of when she was born.  Modesty, Tubman's maternal grandmother, arrived in the United States on a slave ship from Africa; no information is available about her other ancestors. As a child, Tubman was told that she seemed like an Ashanti person due to her character traits, though no evidence exists to confirm this lineage. Her mother Rit (who may have had a white father) was a cook for the Brodess family. Her father Ben was a skilled woodsman who managed the timber work on Thompson's plantation. They married around 1808 and, according to court records, they had nine children together: Linah, Mariah Ritty, Soph, Robert, Minty (Harriet), Ben, Rachel, Henry, and Moses.  Rit struggled to keep her family together as slavery threatened to tear it apart. Edward Brodess sold three of her daughters (Linah, Mariah Ritty, and Soph), separating them from the family forever. When a trader from Georgia approached Brodess about buying Rit's youngest son, Moses, she hid him for a month, aided by other slaves and free blacks in the community. At one point she confronted her owner about the sale. Finally, Brodess and "the Georgia man" came toward the slave quarters to seize the child, where Rit told them, "You are after my son; but the first man that comes into my house, I will split his head open." Brodess backed away and abandoned the sale. Tubman's biographers agree that stories told about this event within the family influenced her belief in the possibilities of resistance.

What else is significant about Tubman's family ?

When a trader from Georgia approached Brodess about buying Rit's youngest son, Moses, she hid him for a month,

IN: Murray Newton Rothbard (; March 2, 1926 - January 7, 1995) was an American heterodox economist of the Austrian School, a historian, and a political theorist whose writings and personal influence played a seminal role in the development of modern right-libertarianism. Rothbard was the founder and leading theoretician of anarcho-capitalism, a staunch advocate of historical revisionism, and a central figure in the twentieth-century American libertarian movement.

Murray Rothbard's parents were David and Rae Rothbard, Jewish immigrants to the U.S. from Poland and Russia, respectively. David Rothbard was a chemist. Murray attended Birch Wathen, a private school in New York City. Rothbard later stated that he much preferred Birch Wathen to the "debasing and egalitarian public school system" he had previously attended in the Bronx.  Rothbard wrote of having grown up as a "right-winger" (adherent of the "Old Right") among friends and neighbors who were "communists or fellow-travelers." Rothbard characterized his immigrant father as an individualist who embraced the American values of minimal government, free enterprise, private property, and "a determination to rise by one's own merits". "[A]ll socialism seemed to me monstrously coercive and abhorrent."  He attended Columbia University, where he received a Bachelor of Arts degree in mathematics in 1945 and, eleven years later, his PhD in economics in 1956. The delay in receiving his PhD was due in part to conflict with his advisor, Joseph Dorfman, and in part to Arthur Burns rejecting his doctoral dissertation. Burns was a longtime friend of the Rothbard family and their neighbor at their Manhattan apartment building. It was only after Burns went on leave from the Columbia faculty to head President Eisenhower's Council of Economic Advisors that Rothbard's thesis was accepted and he received his doctorate. Rothbard later stated that all of his fellow students there were extreme leftists and that he was one of only two Republicans on the Columbia campus at the time.  During the 1940s Rothbard became acquainted with Frank Chodorov and read widely in libertarian-oriented works by Albert Jay Nock, Garet Garrett, Isabel Paterson, H. L. Mencken and others, as well as Austrian economist Ludwig von Mises. In the early 1950s, when Mises was teaching at the Wall Street division of New York University Business School, Rothbard attended Mises' unofficial seminar. Rothbard was greatly influenced by Mises' book, Human Action. Rothbard attracted the attention of the William Volker Fund, a group that provided financial backing to promote various "right-wing" ideologies in the 1950s and early 1960s. The Volker Fund paid Rothbard to write a textbook to explain Human Action in a form which could be used to introduce college undergraduates to Mises' views; a sample chapter he wrote on money and credit won Mises's approval. For ten years, Rothbard was paid a retainer by the Volker Fund, which designated him a "senior analyst." As Rothbard continued his work, he enlarged the project. The result was Rothbard's book Man, Economy, and State, published in 1962. Upon its publication, Mises praised Rothbard's work effusively.

What did he study?

OUT:
he received a Bachelor of Arts degree in mathematics in 1945