Many believe that Dieppe was a failure because of inadequate reserves and firepower. The end result was that the troops were unable to break through the German line right above the beachhead.
In contrast, the Allies at D-Day had adequate reserves and provided ample firepower to allow troops to realistically break through the German lines.
He was the first American President in attending a Peace Conference, and not only he attended but he was one of the major powers who actively participated in it by proposing peaceful negotiations to a long-lasting peace in Europe, that included not to punish Germany harshly.
The war ended in Spring, 1865. Robert E. Lee surrendered the last major Confederate army to Ulysses S. Grant at Appomattox Courthouse on April 9, 1865.
One item can be the weapons. Many Europeans gave the natives a bunch of weapons because they had plenty. They even gave them faulty weapons or broken ones because the natives didn't know any better.
The rail road brought several advantages to the north it helped get supplies to those who needed it it was also a way to transport soldiers