Did all countries start at the same level of development?

No, all countries did not start at the same level of development. The level of development of a country is influenced by a variety of factors including its geographical location, natural resources, cultural history, and interactions with other nations.

1. Geographical Location: The geographical location of a country plays a significant role in its development. For instance, countries located near the equator often have a different set of resources and challenges than those located in colder climates.

2. Natural Resources: The presence of natural resources such as oil, minerals, and fertile land can significantly influence a country's development. Countries rich in these resources have an advantage in terms of economic development.

3. Cultural History: The cultural history of a country, including its traditions, beliefs, and societal structures, can also impact its level of development. For example, countries with a long history of education and learning often have a higher level of development.

4. Interactions with Other Nations: The interactions a country has with other nations, through trade, war, colonization, etc., can greatly affect its development. For instance, countries that were colonized often faced exploitation and may have had their development hindered.

Therefore, due to these and other factors, countries did not all start at the same level of development.