Aleksandros 'un ardıllarının Hellenizm 'i yaymakta kullandıkları etkin politikalardan biri de yeni yerleşimler kurma yoluyla şehirleşmedir. Bu yeni yerleşimler başlangıçta çoğunlukla koloni olarak kurulmuştur. Söz konusu koloniler ise ilk etapta askeri ordugahlar şeklinde karşımıza çıkmaktadır. işte Makedonlar'a ait garnizon kökenli bu koloniler yazıtlarda "Katoikia" olarak geçmektedir. Katoikia 'lar Hellenleştirme kapsammda merkezi sistem içinde tek tip ve tek elden yönetilen birçok yerleşimin çekirdeğini oluşturmuştur. Hatta Katoikia kökenli yerleşimler Roma döneminde bile, her ne kadar yönetim biçimleri değiştirilmiş olsa da, farklı karakterleriyle varlıklarıııı sürdürmüşlerdir.

One of the effective strategies that the Successors of Alexandros use to spread Hellenism is urbanising by founding new settlements. Most of the time these settlements were originally founded as colonies which originally occur as military headquarters. These colonies with a garnison background are named as "Katoikia" in the inscriptions. Despite their form of government being these settlements with Katoikia origin have continued to exist with dijferent characteristics even in Roman Time. When their settlement locations are closely observed it can be better understood why the Katoikia settlements have a military background. That is the Diadochoi were in need of military controlnot only for their internal struggles and their safety in places recently settled in but also for the systematic deployment they had to put into force. They have been able to ensure the safety betweel1 their borders and control the native il1habitants around with the help of these headquarters which were located on strategic spots. After all these the headquarters, Le Katoikia have been made into cities either through the enforced immigration of native or greek rooted people from neighbour settlements or other places or through enforced synoikismos. Katoikia have consequently formed the basis of many uniform settlements ruled by one governor in a central system under the umbrella of Hellenism.