You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "in 1864 the republicans changed their name to?" whose answer is The National Union Party.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Republican Party name change 1864
Useful Output:

Doc 1: During the convention, Republicans loyal to Lincoln temporarily changed the party's name to the National Union Party to attract Democrats who supported Lincoln
Doc 2: The Republican Party fractured during the Civil War years, and in 1864 its radical anti-slavery wing broke away, frustrated with what they perceived as
Doc 3: On July 6, 1854, just after the anniversary of the nation, an anti-slavery state convention was held in Jackson, Michigan.
Doc 4: Republican Party, one of the two major political parties, alongside the Democratic Party, in the United States. Also known as the Grand Old Party, or GOP,
Doc 5: it gradually melted before the pressure of resignation and defeat. To comprehend how contemporary Negro leaders attempted to cope with post-Civil War changes