October 2 in #Russia: 1552 — The capture of Kazan by the troops of Ivan the Terrible, marking the annexation of the Kazan Khanate to Russia. 1834 — In #Moscow, behind the Tverskaya Zastava, the Triumphal Gates were opened in honor of the victories of the #Russian military in 1812, 1813, and 1814 (construction began in 1829). 1879 — The Russian self-taught mechanic Fyodor Blinov received a patent for the “wagon with infinite rails” — a prototype of a caterpillar tractor.