Lincoln worried about resupplying Fort Sumter because he planned to tell Union soldiers to abandon the fort later. he did not want Confederate soldiers to take over the fort. he did not want to appear to give in to the Confederacy. he planned to start an armed conflict with Southern soldiers there.

he did not want to appear to give in to the Confederacy

Explanation:

Abraham Lincoln ended his career in law at the time when the Kansas-Nebraska Act was passed. He believed slavery should not spread. He belonged to two political parties-the Whigs and Republicans. Lincoln worried about resupplying Fort Sumter because he did not want to appear to give in to the Confederacy.

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the steamboat is your answer.

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