Complex sentence: Its capital is Livadeia and the second largest city is Thebes, and it has access to the island of Euboea via two bridges: one that runs through Chalkida, and another bypassing it with further road via Athens.
Split into simpler sentences: Its capital is Livadeia and the second largest city is Thebes. It has access to the island of Euboea via two bridges, one that runs through Chalkida and one bypasses it with another road via Athens.