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.
The 20th century began on January 1, 1901 and ended on December 31,  2000. Two world wars were fought in the 20th century, World War I  and World War II. The 20th century wa â¦ s also the first time man  walked on the moon.901 - 2000. The first year of the 20th century was 1901, and the last was 2000. Centuries are a hundred years long, but they do not start with years ending with 0 because there was no year 0.