Three specific events or beliefs that led to the development of the two-party system

1.  Supporters of Hamiltons vs. Supporters of Jeffersons.

2.  Federalists and Democratic-Republicans

3.  The Farewell address by George Washington

Explanation:

1. Supporters of Hamiltons vs. Supporters of Jeffersons: following the independence of the United States. The financial and economic policy to follow, a case that was argued openly by Hamilton vs Jefferson, caused division among the citizens and eventually led to the idea of a two-party system.

2. Federalists and Democratic-Republicans: during the war between France and Great Britain, the Federalists in their attempt to avoid war, prefer not to support France, while the Democratic-Republicans preferred to support France as a return favor to the French's help in American Revolution. The subsequent actions and actions caused further division in the country and led to a two party system.

3. The Farewell address by George Washington: following George Washington's two-term stint as United States President, he left a farewell message address which the citizens at the time were divided on his opinion. According to Washington, an alliance with any nation outside the USA should be temporary and circumstantial. This led to the emergence of a two party system in the US.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation:

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.