1 00:00:01,010 --> 00:00:04,889 Good morning, everyone. Are you ready? Okay, let's start. 2 00:00:05,549 --> 00:00:09,070 History is divided into five different periods. 3 00:00:09,949 --> 00:00:14,330 Each period starts and ends with an important event. 4 00:00:14,890 --> 00:00:16,390 Let's start with the first one. 5 00:00:17,230 --> 00:00:19,530 First period is prehistory. 6 00:00:20,250 --> 00:00:23,949 Prehistory started when human first appeared 7 00:00:23,949 --> 00:00:29,129 and ended when people learned to read and write. 8 00:00:29,129 --> 00:00:32,469 Okay? Great. Have a wonderful day today.