Final answer:
The two states that were split between Bryan and McKinley were Illinois and Indiana.
Step-by-step explanation:
The two states that were split between Bryan and McKinley in the presidential election were Illinois and Indiana.
In the election of 1900, William Jennings Bryan ran against William McKinley as the Democratic candidate. Bryan's campaign focused on issues such as free silver and anti-imperialism, but McKinley's probusiness policies and overseas acquisitions appealed to many Americans. Ultimately, McKinley won a close election, with a majority of the popular vote.
Therefore, the correct answer is Option 2: Illinois and Indiana.