In 1966, American pyschologist Julian Rotter proposed the Locus of Control concept
The Indian Removal Act took place in the first half of the 1800s under the presidencies of Andrew Jackson and Martin van Buren and directly led to the Trail of Tears, which resulted in the death of many members of tribes in the American South. It was considered controversial because the Supreme Court ruled in favor of the tribes' cause wherein the state of Georgia (which was actively seeking to evict the Indian inhabitants) was told it had no right to force their removal. Nevertheless, the president ordered their removal.
Answer: Early adopter
Explanation: Individuals or groups who buy into a company's product before many others are called early adopters. Early adopters usually get a feel of the product or services before it becomes popular having already experienced the benefit and shortfalls of the product or services before many other individuals within the community.
Being among the first set of users or consumers, product manufacturers and impending consumers rely on early adapters to provide update about product shortfalls and general verdict on product performance.