B. The emergence of polished stone tools caused the emergence of agriculture
Answer:
descriptive investigation
Explanation:
The correct answer is a descriptive investigation. An investigation which does not involve hypotheses called descriptive investigation.
You betcha! a lot of people left because the land became usless, so many farmers( oklahoma familys)migrated to CA and other states, finding their ecomnimics and conditions better :)
Answer:
Because in America there are more skills that every person can do it to maintain themselves from disease.
The Industrial Revolution created many jobs, however, working condition was horrible. Because of the reforms, jobs became more tolerable, people made more wages, and work hours were lower.
