tā te mea
1. because, from the fact that - a conjunction that is sometimes written as one word, i.e. tātemea.
Ka mōhio ahau ki te kaha o te mate, tā te mea, e nohoia ana e ngā Māori ngā wāhi e tata ana ki ngā repo, ki ngā parenga awa (KO 15/4/1884:6). / I know how sick they are because Māori are living in places near swamps and river banks.