1 In a twin pregnancy. the average is 37 weeks. for triplets 34 and quadruplets 32 weeks. 2  The average birth weight for singletons is 7 lbs 7 oz. 3  Average birth weight of twins is 5 lbs 5 oz. for triplets 4lbs and quads 3lbs. 4  A difference in birth weight between multiples is not unusual.
So, sometime between the 1860s and 1936, the (Democratic) party of small government became the party of big government, and the (Republican) party of big government became rhetorically committed to curbing federal power.
The American political parties, now called Democrats and Republicans, switched platforms, ideologies, and members many times in American history. These switches were typically spurred on by major legislative changes and events, such as the Civil War in the 1860âs, and Civil Rights in the 1960âs.