On this day:

1918: Following Revolution of 1917, Moscow replaces St. Petersburg as Russia’s capital

1930: Mahatma Gandhi embarks on his Salt March

1938: Hitler invades Austria

Born on this day:

1864: W. H. R. Rivers: English anthropologist, neurologist, ethnologist, psychiatrist

Gone on this day:

1914: George Westinghouse, American engineer, inventor of railway air brake