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Alexander Hamilton was an American politician and statesman, the founder of the American financial system.
A native of Great Britain, Hamilton arrived in continental America in late 1772 and enrolled at King's College in New York. He became captain of an artillery company in 1776 and fought in the battles of Kips Bay, White Plains, Trenton, and Princeton during the American War of Independence. For four years he served on George Washington's staff as adjutant with the rank of lieutenant colonel. And in 1782, Hamilton was chosen by New York as a delegate to the Confederate Congress.
Alexander Hamilton was also one of New York's delegates to the Constitutional Convention in Philadelphia in 1787. He was a passionate advocate of the Constitution and, along with future President James Madison and John Jay, contributed to the famous book The Federalist (1788), writing most of the essays for it. After George Washington was elected the nation's first president in 1789, he appointed Hamilton Secretary of the Treasury. As the first Secretary of the Treasury (1789-1795), Hamilton developed plans to finance the national debt, secure federal credit, encourage the expansion of manufacturing, and organize a federal bank. In 1801, Hamilton founded the New York Evening Post newspaper.
On July 11, 1804, Hamilton was mortally wounded in a duel with his personal and political rival, Vice President Aaron Burr. Today, Alexander Hamilton is revered as one of the founding fathers of the United States, he is known for his role in creating America's financial system, and his portrait is on the ten dollar bill.
Tycho Brahe, born Tyge Ottesen Brahe, more commonly called Tycho, was a prominent Danish astronomer, astrologer, and alchemist of the Renaissance.
As a young man he traveled extensively throughout Europe, studying in Wittenberg, Rostock, Basel, and Augsburg and acquiring mathematical and astronomical instruments. In 1572 Tycho unexpectedly even for himself discovered a new star in Cassiopeia, and the publication of this turned the young Dane into an astronomer of European reputation. For further astronomical research he established an observatory and gathered around him modern progressive scientists.
Besides practicing astronomy, Tycho was an artist, scientist, and craftsman, and everything he undertook or surrounded himself with had to be innovative and beautiful. He even founded a printing house to produce and bind his manuscripts in his own way, and he perfected sanitary ware for convenience. His development of astronomical instruments and his work in measuring and fixing the positions of the stars laid a solid foundation for future discoveries.
Tycho's observations - the most accurate possible before the invention of the telescope - included a comprehensive study of the solar system and the precise positions of more than 777 fixed stars. What Tycho accomplished using only his simple instruments and intellect remains a remarkable achievement of the Renaissance.