Casualty rates at the Battle of Okinawa and Iwo Jima plays a small role in the justification of dropping the atomic bomb, and is by no means the only justification or even the major justification in using the atomic bomb. They were, after all, only used as a statistical report through the casualty per sq. mile report of what can occur when invading the mainland. So yes, it may be a means towards the justification, but as the justification itself it is not.
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So they could mainstain a stronger colonie and become a better empire
David Wilmot prohibited slavery in the territory
The articles of confederation are the document that was unanimously adopted in 1781 and gave most of the governing power to the states. The continental congress accepted the articles of confederation which is the first constitution of the united states, on November 15, 1777. On the other hand, approval of the articles of confederation by all thirteen states did not happen until March 1, 1781.