August 30 in #Russia: 1700 — Russia entered the Northern War on the side of the Northern Alliance. 1703 — The first flood in the history of St. Petersburg occurred. In just a few hours, the water rose more than two meters. 1756 — Empress Elizabeth Petrovna signed a decree on the "#Russian theater for the presentation of tragedies and comedies." This led to the founding of one of the oldest Russian theaters - the Alexandrinsky Theater in St. Petersburg.