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
Massacres during the Greek War of Independence the islands in the Aegean Sea, in the early years of the Greek revolt. According to historian William St. clair, one of the aims of the Greek revolutionaries was to embroil as many Greek communities as possible in their struggle. Their technique was ""to engineer some atrocity against the local Turkish population"", so that these different Greek communities would have to ally themselves with the revolutionaries fearing a retaliation from the Ottomans. In such a case, in March 1821, Greeks from the Samos island had landed in the Island Chios and attacked the Muslim population living in that island. The