Answer:
A. To keep invaders out of China's walls
Explanation:
Answer:Smallpox and vaccination are intimately connected. Edward Jenner developed the first vaccine to prevent smallpox infections, and this success led to the global eradication of smallpox and the development of many more life-saving vaccines.
Explanation:
The correct answer is B. Negotiating a treaty with Mexico.
Explanation
Foreign policy is the name by which the decisions and actions taken by a State are known to favor the national and international interests of the countries involved. In short, foreign policy groups the agreements, negotiations, and decisions of two or more nations to establish economic, political, and social relations. So if a country like the United States establishes negotiations for a treaty with Mexico, it would be a matter of foreign policy because it involves the interests of two countries and their needs and interests. According to the above, the correct answer is B. Negotiating a treaty with Mexico.
Sharecropping gave white landowners the upper hand and economic dominance in Southern society.
Answer: Option D
<u>Explanation:</u>
Share cropping is a form of agriculture in which the owner of the land gives his land to the tenants where they can grow the crops and earn their livelihood. So this system of agriculture gave an upper hand to the land owners who belonged to the people of the white community and gave them an economic dominance also. It suppressed the lower sections of the society who were the tenants and who were dependent on the land owners for borrowing the land.
