New Roof Installation vs. Repair. Just because your roof springs a leak doesn't mean you need to call a roofing contractor right away. It's important to distinguish the cost of a new roof -- almost $6,500 on average -- versus the much more affordable $550 to repair a roof.
Report Abuse. 1  Beginning Of The Modern Age. 2  No Age has an absolutely definite start (or finish). 3  Technically, the medieval period ended and the modern era began when Columbus discovered America, or at least some islands in the New World, in October 1492.  Every single day for the last ten thousand years.
Confidence votes 658. The Progressive Era is a widely recognized period in American history which is generally considered to have begun around 1900 and to have ended with America's entry into the First World War in 1917. Since the intensity of progressive reform peaked during that time, the designation is appropriate.hus the roots of American Progressivism are deep and wide, but the last decades of the 19th century created conditions that cried out for reform.