-has a stable RMP (no drift, unlike autorhythmic)-has a long duration (skeletal is short)-has a long refractory period (skeletal is short) This means the muscle cells can't re-excite a frequently, prevents cramping in heart muscle
History of socialism. The history of socialism has its origins in the French Revolution of 1789 and the changes which it wrought, although it has precedents in earlier movements and ideas. The Communist Manifesto was written by Karl Marx and Friedrich Engels in 1848 just before the Revolutions of 1848 swept Europe, expressing what they termed 'scientific socialism'.
Socialism in America. The roots of socialism in America can be traced to the arrival of German immigrants in the 1850s when Marxian socialist unions began, such as the National Typographic Union in 1852, United Hatters of 1856, and Iron Moulders` Union of North America in 1859.