what name was given to the day when the stock market crashed in 1929

Name three new weapons that changed how ww! was fought and how?

Which action by the us war department angered chief red cloud to the point that he refused to sign the treaty of fort laramie ? a) the killing of buffalo by the united states troops b) the appointment of troops to the powder river basin c) the burning of parts of the powder river basin d) the murder of chief red cloud’s wife

Did the both the us and ussr have atomic weapons after 1949