Question

add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation. journalist horace greeley founded the liberal republican party and he ran for the u.s. presidency in 1872 but died before the election results were finalized.

Explanation:

The two independent - clauses "Journalist Horace Greeley founded the Liberal Republican Party" and "he ran for the U.S. presidency in 1872 but died before the election results were finalized" are joined by the coordinating conjunction "and". A comma is needed before the coordinating conjunction in a compound sentence.

Answer:

Journalist Horace Greeley founded the Liberal Republican Party, and he ran for the U.S. presidency in 1872 but died before the election results were finalized.