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.
In a similar fashion, the second century CE began on January 1, 101 and continued until December 31, 200. The twentieth century CE began on January 1, 1901 and ended on December 31, 2000. Using the same system, we can calculate the beginning and ending dates for the first century BCE .