bi-focal eyeglasses, self-winding clock, parachutes, <span>the hot-air </span>balloon, <span>the </span>safety lock, steamboats, and <span>the </span><span>circular saw :)</span>
A Trade barrier are laws that limits free trades between countries or nations, An Embargo are type of laws that specifically cuts off trades, it may be import or export into specific countries. Either of these answers fit your question.
Answer:
d. Giving too much influence to the wealthy.
Explanation:
Super PACs are a type of Political Action Committees, and PACs represent pools of campaing contributions and donates that money to the political candidates, in an United States elections. They channel funds for or against a candidate or a legislation.
Super PACs are officially known as independent-expenditure only committees, established in 2012. They engage in an unlimited political spending and are not tied to any political campaign. They can raise money from either individuals or corporations, and there are no legal limits on donation size. In that way, wealthy people can influence the outcome of the elections by spending unlimited amount of money for the support of their desired candidate.
Economic depression coupled with extended drought, unusually high temperatures, poor agricultural practices and the resulting wind erosion all contributed to making the Dust Bowl.