what material was used to build the first castle?
337578
Depends on what you call a "Castle". Most medieval "castles" were built from stone. There were earlier, what could be more termed as "forts" constructed from wood etc. but as stone cutting came in to more common use and society moved in to the "castle age" which were really walled, fortified cities or "citadels" wood was no longer much of a defense against raiders. As to what was the "first" castle, I doubt if that can even be answered as such because a lot of them sprang up around the same time.
588925
Edinburgh castle want actualy built all at once.\n\nLike all grate castles it developed over Hundreds of years.\n\nThings are sketchy how it was first decided to be built on the Volcanic vent that it now sits but ver the years this has proved a good defensive stronghold.\n\nEach monarch has over time added and remoddled the castle to their own liking.
456855
Check out free instructions at this website: http://www.yourchildlearns.com/castle.htm
903270
Probably copper, which was one of several elements known to prehistoric man, and can be found in free form.  Carbon, as charcoal, might also qualify.
61392
First was Technetium, as per the enclosed link
452275
The techniques used to construct Egypt's pyramids are thought to have initially been developed by trial and error and then further evolved based on local economics, resources, and other considerations, over the thousand year pyramid-building phase of Egyptian civilization.\n\nRecently-discovered worker's tombs have shown how pyramids were made and how important workers were: the pyramid workers were paid craftsmen, not slaves, and they had their own city at Giza. Egyptologists also have presented several pieces of evidence showing this, including proof that many laborers worked on the Pyramids during periods of Nile flooding, and that contributing to the Pyramid construction was, religiously, a very good deed for them.\n\nDuring the earliest period, in the Third and Fourth Dynasties, pyramids were constructed wholly of stone. In the Fifth Dynasty the physical scale of pyramids was much reduced, and poor quality limestone replaced granite as the chief building material. In–filling with loose rubble was also used for the first time. This enabled pyramids to be built with fewer resources over much shorter periods.\n\nDuring the Middle Kingdom pyramid construction techniques changed again. Most pyramids built at this time were little more than mountains of mud brick encased in a veneer of polished limestone. In several cases, later pyramids were built on top of natural hills to further reduce the volume of material needed in their construction.\n\nParadoxically, the materials and methods of construction used in the earliest pyramids have ensured their survival in a generally much better state of preservation than is the case with the pyramid monuments of later pharaohs.
442742
Medieval Period\n500 - 1450 AD
1113612
the careful placing and fitting of uncut stones without use of mortar\n\nused for fences in newengland and europe, or more rarely as structural elements in late colonial and earlier structures.\n\nnot suitable where structural codes exist
339380
carbon fiber.\nit comes as a soft material rolled up like cloth, then they cut it and put it around a mould. It is hardened by putting it under a vacuum, and then in a huge autoclave which cooks the material. the result is strong yet light carbon-fiber
271310
They used the same technology the egyptians used to build the pyramids.  Except they used wood, instead of stone.
198871
Silica sand.\n\nhttp://www.publicbookshelf.com/public_html/The_Household_Cyclopedia_of_General_Information/howtomak_cge.html
318405
http://www.medieval-castles.net/index.htm\n\nim still looking for pics\n\nok type this in ask.com\n\npictures of castles during the "middle ages"\n\ni hope it helps
135414
Earth ?\n\nPlease look over the following site,\none of the best sites about 'earthen buildings'\n\nhttp://www.earth-auroville.com/
736413
From the early 1500s brick began to be used by the wealthy to build houses. Ralph Sadlier, a court official and Henry VIII's ambassador to Scotland built Sutton House in Homerton in 1535. Sutton House is still standing today and is now a museum. It is a very impressive house now but it would have seemed magnificent to ordinary people in Tudor times with its brick walls, huge hall and wood panelled rooms. \nIt was during this time that glass emerged as a material for domestic buildings. It was still very expensive though and difficult to produce in large pieces so windows were made from many small panes of glass held together in a grid or lattice pattern. They were usually casement windows so air could be let in and rubbish etc could be thrown out. \n\nHoxton, just outside the north east city wall, was still countryside at this time and as it was away from the dirt, noise and disease but close enough to the city for business and leisure pursuits it was the perfect place for the gentry to live. Over twenty grand houses were built on Hoxton Street during this time, and surrounded by fields and trees it must have been very pleasant. \n\nBalmes House, built around 1540 to the west of Kingsland road, was another grand home. By the time of the Stuart period it belonged to Sir Whitmore and is mentioned in Pepys' diary in 12th May 1667, "... to Sir G Whitmore's house, where we light and walked over the fields to Kingsland and back again, a walk I think I have not taken these twenty years but puts me in mind of my boy's time, when I boarded at Kingsland and used to shoot with my bow and arrow in those fields." \n\nOf course most people did not live in great houses like these. In the country people still lived in wattle and daub houses with thatch roofs like they had for hundreds of years. Although sometimes now they had an upstairs and were a bit bigger they still could not afford bricks and tiles and glass in the windows. Inside most peasants' homes were as spartan as on the outside. Aside from cooking implements and matting to sleep on there would have been very little else, if anything.
221839
http://images.search.yahoo.com/search/images?_adv_prop=images&imgsz=all&imgc=&vf=all&va=medieval+castles&fr=FP-tab-web-t&ei=UTF-8\n\nhttp://www.netserf.org/Architecture/Castles/\n\nhttp://dir.yahoo.com/Arts/Design_Arts/Architecture/Buildings_and_Structures/Castles\n\nRay
527140
Probably something lighter than steel since you have to ship it up there.   I'm not sure what the surface of mars is made out of.  If its made out of rock you probably don't need much of a foundation at all.  If it is made out of mud or sand you'l likely need to have a long wide plate that will distribute the load of your building over a larger area.
767709
iron \nbronze\nbrass\nzinc (Jia Jing 15-20% zinc)\n\nMore details on Alloy Compositiob, see\nhttp://www.britishmuseum.co.uk/product.aspx?ID=1034\n\n"the coinage alloy from bronze to brass occured during the early part  of the 16th century, specifically during the later Hong Zhi period"