Invention is a combination of ideas, artifacts or both, to produce an entirely new artifact or idea. They were invented in India, adopted by Arab traders, and spread across the Middle East and North Africa, and then introduced to Europe. Later, Europeans brought them to the Americas, Australia, and many parts of Africa and Asia. Revitalization is planned, deliberate change. The last type of change is called acculturation.
Acculturation occurs whenever two or more cultures come into contact with each other.
Assimilation occurs when two cultures share their customs and practices, thus producing a new culture. Pluralism , in contrast, occurs when two cultures share a common geographic area, but don't share their customs or practices, and so remain separate cultures. A good example of this is the Amish, who live in the US but have declined to be absorbed into the mainstream culture. Lastly, and most commonly, is exploitation , which occurs when a technologically superior culture takes over a technologically inferior one. Most of the settlement of the world has been a result of one group of people pushing out another group.