The system of democracy was first introduced in Athens, Greece. Athens first started with a direct democracy
The 13th Amendment abolished slavery.
The first inventions that harness natural energy resource is Water mill. Back then, people use the power of water to move the lever in order to create mechanical movement.
The invention that help transfer water from river to town is aqueduct. Or more commonly knwon as water bridgte, useful to navigate the movement of water.
Lever is the invention that makes lifting weight easier, mostly used in contruction sites.
A: Trainloads of tourists killed buffalo purely for sport.
the answer is definitely c. not b or d
