The main ideals espoused by communists are the abolition of all private property and the rule of the working class.
Answer:
The Constitutional Convention in Philadelphia met between May and September of 1787 to address the problems of the weak central government that existed under the Articles of Confederation.
The Treaty of Versailles was a peace treaty that ended WW1 (between Germany and allies)
Penn limited his own power and established an elected assembly. He promised religious freedom to all Christians.
Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
