The Great Pyramid in Egypt is listed as one of the Seven Ancient Wonders of the World. Construction started on the pyramid in 2540 B.C.
The OLD Kingdom
The Old Kingdom
The earliest known pyramid has been dated back to 4621 years ago during the Holocene Epoch (11,700 years to Now) in the Quaternary Period (2,588,000 years to now).
Because of the sheer effort and resources, in a non-mechanical era, to build them.
Events during the Mesozoic include the increasing dominance of dinosaurs. The Mesozoic is marked by the appearance of flowering plants.
Certainly as far back as the era of ancient Egypt. The form of the pyramids, and their alignment is remarkably true. And even then, this was almost after a lengthy period of cerebration and measuremnt.
The Era of Good Feelings was marked by a strong sense of national unity.
The end of an era, or the beginning of an era, is any time marked by a distinctive character. The Roman era. The use of steam power marked the beginning of an era. The Middle Ages is also referred to as the Medieval era. The Neolithic era, 3000 to 1800 bc
Cleopatra lived in the Hellenistic era., or the Ptolemaic era in Egypt.
Pre-dynastic Egypt
Paleozoic
The beginning of Earth's current era is marked by a mass extinction.
The Gandhian era, which lasted from the early 1900s to Gandhi's death in 1948, saw the rise of nonviolent resistance and civil disobedience as powerful tools for social and political change. Gandhi led numerous successful movements for Indian independence and inspired similar movements around the world. His principles of truth, nonviolence, and self-reliance continue to have a profound impact on movements for justice and equality globally.
Las pirámides no son iguales. Hay que tener en cuenta que antiguamente una de las mayores incógnitas era el cielo. Muchas civilizaciones se preguntaban qué sería, qué habría etc. y la cuestión es que no todos construían las pirámides de la misma manera.