This work investigates the political and social conditions of late 16th-century Ireland to propose a strategy for the complete subjugation and cultural assimilation of the Irish people under English rule. Edmund Spenser, an English poet and colonial administrator, utilizes his firsthand experience as a secretary to the Lord Deputy of Ireland to construct this argument. He presents a framework rooted in the necessity of military force, the reform of Irish laws, and the systematic eradication of native customs to ensure English stability. The text serves as a primary document reflecting the colonial administrative mindset of the Elizabethan era.

Historians frequently cite this text as a foundational, albeit controversial, document for understanding Elizabethan colonial policy and the ideological justifications for English expansion in Ireland. Scholars often highlight the density of the prose and the stark contrast between Spenser's poetic reputation and the clinical, often brutal, administrative recommendations found within these pages.