<span>William F. Whyte used observation to study Italian street-corner men. He was a sociologist noted for his studies of urban sociology.</span>
Answer:
population , regions , river
Mountains were a barrier for settlers travelling in North America
Answer:
On May 17, 1954, U.S. Supreme Court Justice Earl Warren delivered the unanimous ruling in the landmark civil rights case Brown v. Board of Education of Topeka, Kansas. State-sanctioned segregation of public schools was a violation of the 14th amendment and was therefore unconstitutional.
Explanation:
:)
