Complex sentence: In July 1919, the first registration of foreign citizens in the territory of the RSFSR was announced, within 7 days after the publication of the resolution of the Commissariat for Internal Affairs.
Split into simpler sentences: In July 1919 the first registration of foreign citizens in the territory of the RSFSR was announced about. Within 7 days after the publication of the Resolution of the Commissariat for Internal Affairs.