Which concept in my understand before Europeans did

I'm sorry, but I'm not sure I understand your question. Could you please provide more context or clarify what you're asking?

It seems like you may be asking about a concept that existed before Europeans arrived. There are many concepts and ideas that were present in various parts of the world before Europeans explored and colonized these regions. Here are a few examples:

1. Civilization: Many advanced civilizations existed before Europeans, such as the Mesopotamians, Egyptians, and the Indus Valley civilization. These societies had complex social structures, developed writing systems, and made significant advancements in agriculture, architecture, and warfare.

2. Philosophy: Ancient philosophers like Confucius in China, Buddha in India, and Socrates in Greece developed complex philosophical systems that explored ideas of ethics, morality, metaphysics, and the nature of reality. These philosophies shaped the intellectual landscape of their respective regions.

3. Scientific knowledge: In ancient times, civilizations like the Egyptians, Mayans, and Chinese had extensive knowledge of astronomy, mathematics, and medicine. For example, the Mayans had a sophisticated calendar system and observatories, while ancient Indian mathematicians made important contributions to algebra and number theory.

4. Religion: Different religious beliefs and practices predate the arrival of Europeans. Examples include Hinduism and Buddhism in India, Taoism and Confucianism in China, and various indigenous religions in Africa, the Americas, and Oceania. These religions shaped the cultural and spiritual beliefs of their respective regions.

5. Political systems: Different types of political systems existed before European colonization. These included empires like the Maurya Empire in India, the Han Dynasty in China, and the Aztec and Inca Empires in the Americas. These societies often had complex governmental structures and organized systems of governance.

It's important to note that the world was diverse and interconnected even before Europeans began their global explorations. Various societies developed their own unique concepts and knowledge systems, contributing to humanity's collective understanding of the world.