Complex sentence: For years afterwards there was a passionate struggle between Prince Alexander and those who would assume the thrown for themselves and in the end all were defeated and finally the Federated Suns was united under the rightul heir of House Davion.
Split into simpler sentences: For years afterwards, there was a passionate struggle between Prince Alexander and those who wanted to assume the throne for themselves. In the end, all were defeated and finally the Federated Suns was united under the rightul heir of House Davion.