Complex sentence: The cult of Hathor predates the historic period, and the roots of devotion to her are therefore difficult to trace, though it may be a development of predynastic cults that venerated fertility, and nature in general, represented by cows.
Split into simpler sentences: The cult of Hathor predates the historic period, and the roots of devotion to her are therefore difficult to trace. Though it may be a development of predynastic cults that venerated fertility, and nature in general, represented by cows.