Complex sentence: In 1511, the first Spanish settlement was founded by Diego Velázquez de Cuéllar at Baracoa; other towns soon followed including the future capital of San Cristobal de la Habana which was founded in 1515.
Split into simpler sentences: In 1511, the first Spanish settlement was founded by Diego Velázquez de Cuéllar at Baracoa. Other towns soon followed including the future capital of San Cristobal de la Habana which was founded in 1515.