Answer:
Ming farmers also introduced many innovations such as water-powered plows, and new agricultural methods such as crop rotation. This led to a massive agricultural surplus that became the basis of a market economy. The Ming saw the rise of commercial plantations that produced crops suitable to their regions.
Explanation:
Probably the two most important contributions animals made to farmers was as food and transportation. Farmers raised cattle, hogs, chicken, goats, etc. for meat, milk, eggs, etc. Before cars horses and horse drawn carriages provided the only transportation. Before farm equipment plows were pulled by oxen.
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Answer:
<h2>A. 14 years from the application date</h2>
Explanation:
Utility patents in US are granted for <em>20 years. The time period is counted from the date of filing of application</em>. Periodic fees are paid to maintain the executability of the patent. Design patents are grants protection for 14 years. It is measured from the date the design patent is granted. While a US trademark lasts as long as trademark is used in the commerce and defended from infringement.
