The single policy adopted by James Monroe in 1823 is called the Monroe Doctrine and serves as a symbol of early American nationalism. In Document A, the Monroe Doctrine is demonstrated by an invisible border separating the Western and Eastern Hemispheres and a stop sign on the Western side. The European region says, “What do you mean, off-limits?”, which shows that they didn't approve of the doctrine that prevents them from hindering US expansion on the Western side. In document B, two flowerpots illustrate nationalism. A flowerpot smiles as it says, “Wow! I'm so happy I was born on this plate and not that one!”, even if the other one looks mediocre. Taking this into account, at this early stage of creation of the United States, other states, namely European countries, cannot be trusted not to try to rob them of their “rightful land”. other countries to hinder America's expansion and security. Furthermore, the convention stipulated that the New World and the Old World were to remain unequivocally isolated. Congress, as well as James Monroe, knew that this doctrine would not mean much in the eyes of Europe and the rest of the world; however, this did not prevent the citizens of the Americas from creating a sense of nationalism based on a false perception of security given by the government based on law and the country's industrial economy were founded. taking structure, as seen in Document F. According to Document G, “During this period an industrial revolution was beginning in the North…The status of America as a whole was strengthened.” However, in Document H, “The separation of the issue of slavery (used for the growing need for cotton plantations in the South) would exist in America from this time until the Civil War.” Furthermore, with virtually no harmful effects, nationalism was seen after the inauguration of the Monroe Doctrine in the way that Americans no longer referred to themselves as “Rhode Islanders” or