Answer:
Lincoln meant that the country can't survive with half slavery and the other half without it. They have to come together as one nation.
Step-by-step explanation:
i hope that answers your question
Based on the question you asked I think he meant that one race cannot stand on its own it needs another race to come together to build a better nation. If the blacks are slaves and the whites are free then the nation will tear apart because you need both people of the nation to come together to make the nation better and the people better.
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