Philippine society is a unique blend of diversity and homogeneity. Although geographically part of Southeast Asia, the country is culturally strongly Euro-American. Forces of assimilation have constantly worked to overcome cultural differences between the various ethnic groups that are scattered—sometimes in relative isolation—throughout the archipelago. Nearly four centuries of Western rule, however, have left an indelible imprint on the Philippines, serving as a conduit for the introduction of Western culture and as the catalyst for the emergence of a sense of Philippine political and cultural unity. While the Christian churches built by the Spanish and the mosques built by the Muslims provided a spiritual anchor, the educational system established by the United States and expanded by the Filipinos has become emblematic of cultural unity and socioeconomic progress. Nonetheless, through the persistence of strong family ties, the revival of the barangay as the smallest unit of government, increased attention to Asian history and literature, and subsequent revival of dormant traditions, the Philippines has strengthened its Asian heritage without abandoning its Western cultural acquisitions.