In the year 1948 in Donora (Pennsylvania) smog killed 20 people and sickened about 7,000. The sulfuric acid, nitrogen dioxide and other toxic gases were caught in the thermal inversion and accumulated. It was one of the worst air pollution disasters in the history. Answer: C ) a thermal inversion and stagnant weather conditions.
Include an educational Reform
the educational reform in early 2000's adopted Outcome based Education system, which basically freed any style of teachings as long as the students able tho pass a required standards. Also, there was a program called no child left behind which was created to develop students' basic assessment skills
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The 13 American colonies cut their political ties with Great Britain by publishing the Declaration of Independence, which was adopted by the Continental Congress on July 4, 1776. The Declaration enumerated the reasons for the colonies' desire for independence. The American colonies were able to seal an official alliance with the French government and receive French support in the battle against Great Britain by proclaiming themselves an independent country. North American colonists were increasingly at conflict with British imperial policies about taxes and frontier policy throughout the 1760s and early 1770s. When repeated protests failed to sway British policy and instead resulted in the closure of Boston's port and the establishment of martial law in Massachusetts, the colonial governments dispatched delegates to the Continental Congress to plan a colonial boycott of British products.
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In England and France, monarchs expanded royal authority and laid the foundations for united nation-states. They jealously guarded their rights and privileges against any effort by rulers to increase royal authority. Monarchs used various means to centralize power.
<span>A geographer is someone who studies the earth and its land, features, and inhabitants. They also examine phenomena such as political or cultural structures as they relate to geography. They study the physical or human geographic characteristics or both of a region, ranging in scale from local to global.</span>
