I am not sure what exactly you want to receive as an answer but Ill give 2 examples.
After the rise of the Third Reich Jewish people were forced to migrate from Germany to neighboring countries and a lot of them in fact fled to United States including the famous scientist Albert Einstein.
The other example is the forced migration of Native Americans during the settlement and colonization by the American Colonies as they were trying to go farther down the continent.
Answer:
Being closer to home, the South was able to keep their supply lines significantly shorter than the Northern ones, and so were able to get food, ammunition, and medicine to their soldiers much more quickly than the Northern army could.
or in Spanish
Al estar más cerca de casa, el Sur pudo mantener sus líneas de suministro significativamente más cortas que las del Norte, y así pudo llevar comida, municiones y medicinas a sus soldados mucho más rápido que el ejército del Norte.
Explanation: