Born in 1818, which German thinker drew on utopian socialism and Henri de Saint-Simon in developing his theory of class struggle?

Sarah Childress, born in Tennessee in 1803, attended school in which state, the birthplace of her husband, James K. Pol… Born in 1810, which Polish composer studied harmony at the Warsaw Conservatory? Born in 1815, which Prussian statesman engineered the unification of Germany and became its first chancellor? Born in 1817, which writer lived alone at Walden Pond from 1845 to 1847 and died in 1862? Born in 1819, which monarch reigned from 1837 until her death in 1901? Born in 1820, which co-author of the 1848 "Communist Manifesto" edited later volumes of "Das Kapital" after Marx's deat… Born in Maryland in 1838, which actor was known for playing Romeo before he assassinated Abraham Lincoln? Born in 1850, which future labor leader joined the cigarmakers' union at age 14?