Option A, it allowed for government to enforce laws and settle disputes is the right answer.
The colonies of the United States did not want to have a strong centralized government, because they did not want the government to become a tyranny. Hence, they did not even provide the national government with some very significant powers such as the power of issuing money, imposing taxes, enforcing laws etc.
Constitution fixed this problem by giving more power to the Federal government. The new government adopted the system of checks and Balances.This system was developed by the framers of the constitution to prevent the actions of the other branches from becoming powerful. Hence, all the three branches ( the Legislative, the Executive and the Judicially) of the system are induced to share power.
<span>Because he believed that if our nation would survive then we would need a strong government and the government needed rules to go by or they would basically monarch us. On September 14, 1786 Alexander Hamilton wrote the call for the Constitutional Convention in Philadelphia to be held in May of 1787. George Washington was unanimously chosen to preside over the convention. Although he rarely spoke during the four month convention, his prestige gave it legitimacy. Also, after hours at the local taverns (visit City Tavern), Washington was very active in developing strategy behind the scenes. He had a major impact on the success of the Convention.</span>
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The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke. Hope this helps, plus this was the main reason why it happened plus if you see a link other people offer for the answer don’t put it in the web, I tested it out I got a virus. Anyways hope this helps!