Abu Bakr was elected after Muhammad's death
Answer:
1.The arrest and death of Philip Nolan 2.Grito de Dolores
3.Father Hidalgo is executed
4.The Gutierrez-Magee Expedition 5.The Republican Army captures Nacogdoches
6.José Bernardo Gutiérrez declares Texas independent from Spain
7.The Republican Army loses to General Joaquin de Arredondo
8. James Long declares Texas independent from Spain
The prehistoric era predates writing. Human progress included primitive tools and weapons, clothing, fire, cave art and burial of the dead. During the Old Stone Age, human beings were learning, but they were learning slowly. Then around 10,000 years ago progress began to speed up, with developments like agriculture, the domestication of animals, the creation of permanent villages and cities, etc. Writing began to appear around 5,000 years ago (around 3,000 BC) and that may be the beginning of what we call history, since we begin to know what people were thinking as well as what they were doing.
All of the above would be important factors .