Question

how did the civil war influence lincoln’s duties in managing a nation as president? it forced lincoln to rely on a vastly expanded cabinet. it added to lincoln’s burdensome need to multitask. it forced lincoln to abandon his campaign promises.

Explanation:

The Civil War increased Lincoln's workload (multitask need). The option "It added to Lincoln’s burdensome need to multitask" fits. The other options: "abandon campaign promises" isn't direct from war's management impact, "rely on expanded cabinet" is less about daily duties vs. workload increase.

Answer:

It added to Lincoln’s burdensome need to multitask.