Answer: People were afraid of wild animals and people they didn’t know. So they used a door to protect themselves and their families. The doors didn’t look like the way they do now. It was a huge stone at first. Later on the door started developing in Greece.
It is believed that the first "doors" were invented in central Egypt, this is because the architecture contains many decorations of doors, and it was also used in tombs. The "doors" back then had many different styles and designs, unlike today, where everyone's is basically the same. However, despite this information, no one really knows who first invented it. But we do know that the first person to make an automatic door was the Heron of Alexandria. The reason as to why doors had first been created is because people used them to protect themselves from things such as wild animals, weather, and others that may harm them. With these reasons, people today still use doors for the same concept reason, as to protect themselves.
<span>The cities of Mohenjo-Daro and Harappa achieved all of the following EXCEPT a written language that has been deciphered. They had sewer and trash systems, and buildings made of brick.</span>
