Today In History: What Happened On Feb 10

➢ World Pulses Day, ➢ National Deworming Day, ➢ National Umbrella Day, ➢ 1904: Japan and Russia declare war, ➢ 1911: Postal delivery began by airplane in India, ➢ 1931: New Delhi city officially opened, ➢ 2010: Death of Indian economist and 1st planning commission member KN Raj, and ➢ 1990: Birth of background singer Revant.