Between April 25th and May 1st 1862, American Civil war broke out which made General Butler and Admiral Farragut to capture New Orleans, thus making Natchez to surrender the control of the southern part of Mississippi River to the North.
The Union was able to capture the entire city unopposed after conquering the Fort Jackson and St. Phillips along the way, thus, this helps to reduce the level of destruction in the city, and most especially the Southern part of New Orlean. It is a major turning point in history of America as it involves the capture of the largest Confederate city.
The capture of New Orleans was one of the most significant moments during the civil war because its was an important ports a center of marine architecture and building, the Mississippi River being an important river for marine operations, a region of the South was capture by General Butler and Admiral David Farragut of the North in 18 to 29th of April, 1862.
The main reason people in other European countries resisted Napoleon because they didn't want him to take over their country and because of Napoleon's mistakes