莫斯科纪念建城878周年

Core Viewpoint - Moscow is commemorating its 878th anniversary with various activities, highlighting its significance as the political, economic, scientific, and cultural center of Russia [2]. Group 1 - Moscow was founded in the mid-12th century, with the earliest recorded mention dating back to 1147 [2]. - The anniversary celebrations are taking place from September 13 to 14 [2]. - The events are being held at the Exhibition of Achievements of National Economy in Moscow [2].