<span>Answer: Native Americans located on reservations gained U.S citizenship in 1924.</span>
I believe it is D.
Because barter system. Like it kinda explains its self.
The correct answer is European exploration of other continents
The development of commercial practice has brought about profound changes in the European economic scenario. The advance of trade established the strengthening of the bourgeoisie as an economic class. At the same time, the National States in formation realized that the development of commercial practices paved the financial support of the governments through the collection of taxes.
In this context, the development of monopolistic actions in other regions of the planet has become a fundamental point of commercial activity. In some cases, these National States were looking for ways to exclusively control thriving trade routes that linked the Western and Eastern world. In the 16th century, with the discovery of the American continent, the exploration of vast territories also included colonization in this economic context.
The development of colonization undertook a historic event that marked the definitive entry of Europeans into America. In this sense, with the arrival of European colonizers, forms of use and domination of territories were organized.
