Dodecanese relative quiet and prosperity. In 408 BC, the three cities of Rhodes had united to form one state, which built a new capital on the northern end of the island, also named "Rhodes"; this united Rhodes was to dominate the region for the coming millennia. Other islands in the Dodecanese also developed into significant economic and cultural centers; most notably, Kos served as the site of the school of medicine founded by Hippocrates. However, the Peloponnesian War had so weakened the entire Greek civilization's military strength that it lay open to invasion. In 357 BC, the islands were conquered by
Cypriot Greek varieties, along with the dialects of the Dodecanese and Chios (with which it shares several phonological phenomena). Though Cypriot Greek tends to be regarded as a dialect by its speakers, it is unintelligible to speakers of Standard Modern Greek without adequate prior exposure. Greek-speaking Cypriots are diglossic in the vernacular Cypriot Greek (the "low" variety) and Standard Modern Greek (the "high" variety). Cypriot Greek is itself a dialect continuum with an emerging koine. argue that diglossia has given way to a "post-diglossic [dialectal] continuum [...] a quasi-continuous spread of overlapping varieties". Studies of the phonology of Cypriot Greek are few