Simplify the following text for a Grade 6 native English-speaking person.
Original: Newer bricks , dated between 7,000 and 6,395 B.C. , come from Jericho and Catal HÃ 1\/4 yÃ 1\/4 k. The invenÂ tion of the fired brick ( as opposed to the considÂ erably earlier sun-dried mud brick ) is believed to have arisen in about the third millennium BC in the Middle East .
Simplified: Other more recent findings , dated between 7,000 and 6,395 B.C. , come from Jericho and Catal HÃ 1\/4 yÃ 1\/4 k. The first sun-dried bricks were made in Mesopotamia ( what is now Iraq ) , in the ancient city of Ur in about 4000 BC , although the arch used for drying the bricks was not actually found .