Throughout its history, Christianity has adapted to contemporary society and culture in order to reach people effectively and have an impact on the world. This process often evokes controversy. Certainly this is the case in the current century, and so it was in the sixteenth. Robert Bireley argues that early modern Catholicism, the period known more traditionally as the Counter Reformation, was both shaped by and an active response to the profound changes of the sixteenth century - the growth of the state; economic expansion and social dislocation; European colonialism across the seas; the Renaissance; and, of course, the Protestant Reformation.