Passage: With a growing feeling of nationalism in the country, he returned and founded the journal Türk Yurdu, which sought to become the intellectual force behind the growth of nationalism. Differing from the regime somewhat, he defined the Turkish identity in purely ethnic terms and came to look outside the borders of the country for a kinship with other Turkic peoples. he also called for creation of a national economy and a move away from Islamic values (an area in which he clashed with Ziya Gökalp, as Akçura wanted a secular Turkey, fearing that Pan-Islamism would hinder nationalist development), meaning that he was largely sympathetic to Kemal Atatürk.

Question: Nationalism in Turkey was bolstered by what intellectual journal?
Türk Yurdu