There have been many different styles or kinds of architecture in the past and there are many different styles today in different parts of the world.
The oldest monuments which are met within architecture are the colossal pyramids of Egypt most of which were constructed about 6,000 years ago.
The pyramids are large triangular buildings which were placed over tombs of Egyptian kings. The best known of the pyramids are a group of three built at Giza south of Cairo. The largest of these is 482 feet high.
The country was rich in hard and durable stone, but poor in timber and metal, so that the main material used for construction was granite, and this was the reason for the durability of the pyramids.
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The main material used for construction was granite because the country was poor in durable stone.
The main material used for construction was granite because the country was rich in metal.
The main material used for construction was granite because the country was rich in hard stone.
The main material used for construction was granite because the country was poor in timber.