The United States eventually won the war. This showed other countries that even in the worst situations the country could hold it's own.
The native american came to the new world with the conquistadors. For one spanish conquistador an expedition that began on a texas beach ended with a much different kind of notable attainment than whichever the spanish crown and catholic church perhaps anticipated. The remarkable journey also opened a conversation about unfair benefit and human rights that endures to this day. During the age of exploration, the spanish conquistadors arose to the america in exploration of the three G's: gold, glory, and God. The spanish crown acknowledged the gold and glory and the catholic church acknowledged the converts. A fourth G was typically on the consideration prize list as well: geography. European controls contended dynamically and violently to claim land in the america in command to spread their territories across the oceans.
Both speeches focus on the history of fighting for a cause leading up to the Civil War. The US was built on revolutionary spirit and men's lives lost for the bigger idea of freedom. The deaths of the men will mean something because the cause of the war means something.
These addresses revitalized the Union effort and reminded the men of the long history they were now a part of. They stand on the side of freedom and that will be meaningful. This dedicate brought up morale in Union forces.
If it is what i think it is, it should be sharks :)