In 1719, which small principality was formed by uniting the counties of Vaduz and Schellenberg?

In 1589, which scientist was made professor of mathematics at the University of Pisa, only to have his contract not ren… In 1614, which Jamestown leader returned to America and mapped the coast of a region he named "New England"? In 1633, Descartes held back his book "The World" after which Italian scientist was condemned by the Inquisition? In 1709, Sweden lost to which Russian czar at the Battle of Poltava, ending its dominance in the Baltic region? In 1725, Peter the Great commissioned which Danish navigator to explore the Pacific coast of Siberia? In 1748, Lord Fairfax hired which 16-year-old to help survey his lands in the Shenandoah Valley? In 1773, which ex-printer and inventor published "Rules by Which a Great Empire May Be Reduced to a Small One"? In 1779, which college became the first in the U.S. to offer professional training in law?