Q- For about how many years was china a sea power? A- For about 92 years :)
ancient china lasted 6000 years
It was for about 92 years.
Marco polo was in china from years 1275 to 1292
100 years?
because it caused many deaths from floods :)
Cathay
cathay
over 2000 years
23 years ago
The earthquake in Shannxi caused 830,000 deaths according to a website in China.
There are different types of insulated windows, and they can all have the same life expectancy as a normal single pane window when no damage is caused to them. Many of the better insulated windows have the following structure: pane of glass; gas, film, gas, and another pane of glass. This sits in a frame with a seal. The biggest problem for insulated windows is that the seal breaks letting the gas escape, reducing the effectiveness of the window. This seal can break with damage to the frame.