Margarine and butter are examples of substitutes.
Ending slavery means it will stop for sure, mean while ending the slavery trade means you won't be making more trades but slavery still exist.
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Wilson believed that having distinct and separate American combat units would guarantee the US a major role in the peace talks at the end of the war
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In the early twentieth century, reformers worked to improve American society and ... referred to as the Progressive Era, an era of intense social and political reform aimed at ... During the Progressive Era, protections for workers and consumers were ... who founded Hull House in Chicago to help immigrants adapt to life
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