Complex sentence: Today, the Port of Rijeka is the largest port in Croatia, with a cargo throughput in 2010 of 4.6 million tonnes, most of which is was general and bulk cargo, and 137,048 TEUs.
Split into simpler sentences: Today, the Port of Rijeka is the largest port in Croatia. In 2010, the Port of Rijeka had a cargo throughput of 4.6 million tonnes, most of which is was general and bulk cargo, and 137,048 TEUs.