Why did the leaders of the america of the united states decide to create a new plan of government in 1787? (a) the american army had finally defend the british, and the country needed credits on constitution. (b) they recognize the central government created by the articles of confederation was too weak. (c) they felt that the power to collect taxes granted to the federal government was excessive and had to be reined in. (d) the states correctly decide that their individuals needed more important than the needs of the nation as a whole.