How did european imperialism from 1750 to 1914 differ from earlier european overseas expansion?

The sixth amendment of the u.s. constitution guarantees the right to which of the following?

What artifact did modern scholars study to them understand hieroglyphics

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