<span>1909-1913 is the answer</span>
Air filters if this is a trick question if not then less air pullution
Answer:
The most famous early practitioner of progressive education was Francis Parker; its best-known spokesperson was the philosopher John Dewey. In 1875 Francis Parker became superintendent of schools in Quincy, Massachusetts, after spending two years in Germany studying emerging educational trends on the continent.
Explanation:
Tree ring patterns.............
Aboard the Mayflower on the way to the colonies, he created the Mayflower Compact which was the first "governing paper" this creating and changing the government of Massachusetts into what was agreed upon by him and his fellow pilgrims aboard. So, B.
