What was the direct effort of Lincoln sending supplies to the Federal troops at Fort Sumter?

Knowing that Anderson and his men were running out of supplies, Lincoln announced his intention to send three unarmed ships to relieve Fort Sumter. Having already declared that any attempt to resupply the fort would be seen as an act of aggression, South Carolina militia forces soon scrambled to respond.

Explanation:

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(Pl MAKE ME THE BRAINIEST)

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.