She is talking about the history of the nation, Thai definition related to phetchaburi province and historical places plenty of each in each era. Since prehistoric ages till now.
She talks about the history of Thailand. That are relevant to the Phetchaburi Province. And many historical landmarks of the modern era, from prehistoric times to the present.
She talked about the history of the nation. Have connection with time. And the register of historic places in plenty of each period. In each period since prehistoric times to the present.