How does the political systems fluctuate between democratic and republican?

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?

Which powers best complete this graphic?

Many scholars and observers have argued that the ratification of the fourteenth amendment to the constitution has become the single most important act in all of united states politics. (a) identify which provision of the fourteenth amendment was applied to the following supreme court cases. for each case, explain the significance of the decision in united states politics. ' mapp v. ohio (1961) ' gideon v. wainwright (1963) (b) identify which provision of the fourteenth amendment was applied to the following supreme court cases. for each case, explain the significance of the decision in united states politics. ' brown v. board of education (1954) ' baker v. carr (1962) ' regents of the university of california v. bakke (1978)