Why are the doors and windows made of glass in countries that have cold climates plz follow me and answer fast

The doors and windows are made of glass in counties with cold climates because the glass manages to increase the effect of the sun, thus warm up the houses more.

Explanation:

n The manner in which the houses are built around the world differs greatly, and the main reason for that is the climate conditions. In places where there are strong winds, the houses tend to be short and flatter, in areas where there is heavy snow they are made with very thick walls and roofs that slope at a greater angle, in places where the climate is cold for most of the year people have utilized glass-made windows and doors.

The glass-made windows and doors in areas that have cold climates are of great benefit. This is due to the properties of the glass to be able to further focus the sunlight, thus it makes it stronger when it passes through it. In this manner, the inside of the house gets more warmth which is crucial in areas with low temperatures.