The significance of the Treaty of Algiers in shaping North Africa lies in its formalization of French colonial presence in Algeria following years of military conflict. Signed in 1830, the treaty established France as the colonial power, leading to extensive political, social, and economic transformation in the region. This resulted in the integration of Algeria into the French Empire, widespread resistance among the local population, and lasting implications on post-colonial identity. The treaty marked the beginning of a long, tumultuous relationship between Algeria and France, influencing Algerian nationalism.