Complex sentence: However, this process was due to the reduction of unstressed vowels to schwa due to a fixed stress location, which is a feature of all of the Germanic Languages and thus has nothing to do with pidginization.
Split into simpler sentences: However, this process is due to the reduction of unstressed vowels to schwa due to a fixed stress location. A fixed stress is the same in all of the Germanic Languages and thus has nothing to do with pidginization.