<span>19th <em>Century</em> rags-to-riches tales often experience <em>life</em> in <em>boarding houses</em> ...</span>
Answer:
communications inventions
transportation inventions
names of specific inventors or entrepreneurs
examples of consumer goods
the impact of inventions on American society
Explanation:
It is b, because my teacher had once taught me about that.
Answer:
It's Demand
Two goods are substitutes if one can replace the other in consumption. If a substitute good becomes cheaper this shifts the demand curve in.
Inheritance, trade, sold slaves.
Hope this helped.