Answer:
B and D
Explanation:
Iron pillow and fertile silt are not farming advances.
Advantages:
From a conservative or state-based ideology: it is much easier to control population since they rarely receive "strange" ideas or influence from outside. Domestic policies become much more important. In so, it becomes easier to set popular aims targeting citizens.
The country could(historically seen) stand the best defense against outside powers which could try to set an invasion. For example, the Great Wall of China turned out to set a strong defense against Mongols and other menaces along many centuries.
Disadvantages are listed:
Trading with other countries can influence negatively on economic growth, as there is no autonomous country even if it results as big as China.
Trade has become key in today's globalized world, henceforth the need to collaborate or cooperate in economic exchanges is a necessity to keep up the pace in global affairs.
George Washington's wife's name was Martha Washington.
The correct answer is C) nutrition. Philip Danforth Armour was an American industrialist, businessman and inventor. He founded the Armour & Company in 1867, setting a precedent in the packing, storage, and distribution of meat in the United States.
He developed innovative ways for the meat industry, such as the use of by-products and canned meat. Furthermore, he opened refrigeration and meat storage centers in cities such as Chicago. As a result, the Armour & Company began to export meat products to Europe.
