This book presents an innovative analysis that relates informational structure, syntax and morphology in Quechua. It provides a minimalist account of the relationship between focus, topic, evidentiality and other left-peripheral features and sentence-internal constituents marked with suffixes that have been previously considered of a pragmatic nature. Intervention effects show that these relationships are also of a syntactic nature. The analysis is extended to morphological markers that appear on polarity sensitive items and wh-words. The book also provides a brief overview of the main characteristics of Quechua syntax as well as additional bibliographical information.