This volume provides an inductively based cross-linguistic analysis of grammars in contact. A typological introduction sketches principles of contact-induced change and factors which help to spread linguistic traits. This is followed by twelve studies of contact-induced changes in languages from Amazonia, East and West Africa, Australia, East Timor, and the Sinitic domain. Alongside these, there are also studies of language contact in the Balkans, Basque in contact with Romance languages in Spain and France, and Pennsylvania German spoken by Mennonites in Canada in contact with English.