Answer:
Friction between the wheels and track causes energy to leave the system in the form of heat.
Explanation:
<span>Rome had a strict class system based largely on placement at birth. Slaves could never be merchants and merchants seldom be aristocrats. Rome was generally tolerant of local religion and customs of the places that were conquered as a way to help integrate and assimilate the new citizens over time. These problems were exacerbated by continual, rapid expansion of the empire until it was simply too big to be governed, leading to the split of the empire between East and West, followed by their eventual fall.</span>
Answer: It means people try to imitate the actions of people of knowledge, in hope to understand what the wise know.
the European union because the Russian economy