In a commemorative speech, the speaker's goal is to highlight the events that occurred and to explain why things that had happened had happened. During the speech, a general sentiment about the event is expressed which can be either joyful or sorrowful depending on the occasion. World war 2 commemorative speeches are usually full of dread because of the horrors that happened in the war.
It impacted politics in the mid-19th century because of the large inflows of immigrants after 1845 from cultures that were different from the existing American culture.
