Year 9 2021 History By Human Bean Period: Feb 2, 2021 to Feb 22, 2021 The Industrial Revolution Period: Feb 22, 2021 to Mar 15, 2021 White Australia Policy Period: Mar 15, 2021 to Apr 16, 2021 WW1 Period: Apr 16, 2021 to Jun 21, 2021 WW2