A Native American uses a rifle to hunt buffalo (B). Before the Columbian Exchange, no modern weapons reached the Americas. Natives hunted with the tools and techniques they had been using for hundreds of years.
The correct answer is Nuclear Disaster.
A farmer moves to an industrial area to work in a coal mine.
<u>Explanation:</u>
During the time of industrial revolution in England, the economy in that country moved from the primary to the secondary sector of the country. There were more people who were dependent on factories and industries for earning their livelihood as compared to be dependent on the agriculture for the same purpose. In this incident also, a farmer left his farm work and started to work in an industry and improved his standards of living.
1) protecting social welfare
2) economic reforms
3) economic efficiency
4) promoting moral improvement
