The head-marked clause is common in the Americas, Australia, New Guinea, and the Bantu languages but is very rare elsewhere. The dependent-marked clause is common in Eurasia and Northern Africa, sparse in South America, and rare in North America. In New Guinea, it clusters in the Eastern Highlands, in Australia in the south, east, and interior, with the very old Pama-Nyungan family. Double-marking is moderately well attested in the Americas, Australia, and New Guinea, and the southern fringe of Eurasia (chiefly in the Caucasian languages and Himalayan mountain enclaves), and particularly favored in Australia and the westernmost Americas. The zero-marked object is, unsurprisingly, common in Southeast Asia and Western Africa, two centers of morphological simplicity, but also very common in New Guinea and moderately common in Eastern Africa and Central America and South America, among languages of average or higher morphological complexity.