Factbox: Who is speaking at the Republican National Convention, and why

The theme of the nominating convention will be "Honoring the Great American Story," and will culminate in a live acceptance speech by Trump on Thursday night from the South Lawn of the White House.The president, who trails Democratic nominee Joe Biden in opinion polls ahead of the Nov. 3 election, will be the central focus and will speak each night, according to campaign sources, including one event when he will honor doctors, nurses and other workers on the front line of the fight against the C