The articles of confederation was an early and important part of american government. identify what the articles of confederation were and explain why this document failed and was eventually replaced by the united states constitution.

Although the Articles of Confederation were an important step in the creation of the United States, they were very weak in the sense that they didn't provide a central government with any power. Without this, trade and currency equilibrium were virtually impossible. The Constitution gave a great deal of power to a newly established federal government. 

United States was an ‘associate power’ and it was not an official ally but fought against the central powers in World War I

Explanation:

The allies were the countries formed by triple alliance and the United States which battled against the dominant central powers. Triple entity called triple Entente was formed which means that there was an informal indulgence among Britain, Russia and France which was formed to oppose the central powers. Japan articulated its detachment and open mindedness but later joined the allies.

Associate powers were United States but later on it joined the allies and fought against the Axis powers. Associate members included Serbia and Romania too.