The explorations of the European nations were triggered mainly by the capturing of Constantinople by the Ottomans and that the waters in the eastern part of the Mediterranean became very unsafe for trade and travel, and they needed badly this routes for trade with Asia. So the European nations decided to find other routs towards Asia which will be better options for them, but instead of finding new roots to Asia, they found two new continents, North and South America.
The Europeans that managed to make colonies in the Americas gained new territories, lots of natural resources, discovered new plants, and that was very profitable for the colonial countries.
The Native Americans, on the other hand, were faced with a big threat, and they lost their territories, lots of them also lost their lives, were treated very badly and brutally in general, and ended up as second class people in the newly formed societies.
Una fuente primaria es algo escrito o creado por una persona que vio un evento histórico. Las cartas, los diarios, los discursos y las fotografías son ejemplos de fuentes primarias. Los artefactos como las herramientas son también fuentes primarias. Otras herramientas que los historiadores usan son fuentes secundarias.
Answer:
The statement that contradicts the thesis is
D) A return to isolationism and impartiality at the beginning of World War 1
Although this did not necessarily happen because of lack of power, opting for isolationism during a world war does reduce the perceived power both people in America and abroad have about the country.