Northerners responded in many different ways to the Fugitive Slave Act, but the best option from the list would be "<span>A. Some northern states enacted legislation opposing it" was one of the major tensions leading up to the war. </span>
I believe that the best answer among the choices provided by the question is <span>The passage of the Nineteenth Amendment showed women that they could collectively bargain at work for the rights they wanted.</span>
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The bombing of Pearl Harbor brought the United States into WW2. The United States stayed out of the way until this event because it was the breaking point for the nation. America had been attacked without what they deemed was a good reason and hundreds had been killed and injured.
Cecil Rhodes authorized an attack on Boer territories.