Final answer:
England seemed to have the best chance at eventually controlling what is now the United States due to their establishment of the first permanent European settlement in North America and their strong colonial administration.
Step-by-step explanation:
In 1600, the European nation that seemed to have the best chance at eventually controlling what is now the United States was England. England established the first permanent European settlement in North America at Jamestown in 1607, and later expanded its colonies along the eastern seaboard of North America.
England's focus on settling the region, along with their strong naval power and colonial administration, gave them an advantage in establishing control over the future United States. Over time, England's colonies grew in population and economic strength, eventually leading to the declaration of independence and the formation of the United States.