11-Letter US City Names by KlionskyG

Question 8

What is the southernmost 11-letter city [of over 100,00 people] in the lower 48 states? Arguably, the final battle of the Civil War (because in fact it took place a month after Lincoln was assassinated) was fought a few miles east of here.

Edited to add minimum city size, 1AM 8/27

Brownsville, TX