The correct spelling of the phrase "wast dependent upon" is influenced by its pronunciation. In IPA phonetic transcription, it would be written as /wɑst dɪˈpɛndənt əˈpɑn/. The first word "wast" is an archaic form of "was" which was commonly used in Middle English. The second word "dependent" is spelled with an "e" between the "d" and "n" to signify the presence of the schwa /ə/ sound between the consonants. "Upon" is spelled as it sounds, with the accent falling on the first syllable.