How does the modern era differ from the post-classical era? a. economies are based on agriculture during the modern era, but were based on manufacturing during the post-classical era. b. the modern era has seen the rise of powerful imperial states, while the post-classical era was characterized by smaller city-states. c. the modern era is characterized by global exchange of ideas and goods, while this kind of exchange was mostly regional during the post-classical era. d. nations rely on raw materials from within their own borders during the modern era, but they relied on materials from abroad during the post-classical era.

Option: C. The modern era is characterized by global exchange of ideas and goods, while this kind of exchange was mostly regional during the post-classical era.

Explanation:

The post-classical era is characterized by the expansion of the civilizations around Asia and the Middle East with a flourished trading with nearby regions. Where the modern era is known by its connection with the worldwide in terms of interchanging ideas and merchandise, industries and development in the areas of science, technology, politics and warfare.  

answer: you could try asking a family member maybe?

here are some major conflicts i found. maybe pick one and do more research on it. (cause i ain't writing 6 paragraphs)

in 1877, the nez perce war took place.

1881 - president james garfield was assassinated.

1882 - the chinese exclusion act was passed.

1883 - a decision in the civil rights cases legalized racial segregation in the united states.

1887 - the dawes act was passed.

1893 - the panic of 1893 took place. (what a creative name)

and there are probably other topics you can find if you just search up "united states timeline," or "conflicts in the 19th century for america."

then once you find a topic you like find out how it affected the people of america and what not. (sorry if this feels a bit short changed, history was and never will be one of my strong topics)