The central idea is the main idea or the most important part of the story. It can also be an opinion statement that is able to be supported by the details. As you read the passage, what is is mostly about? What factual information is presented that can lead you to the main idea. In other words, the main idea (or central idea) is more general and the supporting details are more focused.
They express similar feelings by showing that the people who have died.... have not died without reasoning. They died for a purpose and we should celebrate that purpose and make sure that their purpose is pulled through.