<span>A direct attack on open ground causes large numbers of casualties. </span>
Remember that when the Articles of Confederations was in place, the US was still at it's former 13 colonies. The Articles of Confederations needed 9 of the 13 colonies to approve of a bill before it became law.
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D, the United States refused to join the League of Nations.
Declaration of what? united states? to reunite the states