Seismograph: Showed that earthquakes are not signs of heaven's anger but..
Water Clock: Helped measure time accurately without the sun
Sundial: Helped measure time with the aid of the sun
Perpetual Calendar: Tracked days, weeks, and months across a year
Paper: Replaced heavy writing surfaces such as stone or shell and allowed for the printing of Buddhist's prayers
When it came to the civil war, Lincoln dealt with the Copperheads by suspending the habeas corpus. This meant that their constitutional right that protected them from unlawful imprisonment did not apply to them anymore. They were against the war and spread the conscription idea so Lincoln had many of them locked up and put on trial for treason. They were called copperheads because they were compared to snakes since they were northern democrats who were against the civil war, and the war was deemed as necessary.
Answer:
Before the inventory of fire primitive mam ate uncooked food and it bacame hard for him to go outside in dark.