What does Uncle Sam mean when he says and just when I had such an advantage in the start of the race for the world markets

Explanation:

The late nineteenth century was known as the “Age of Imperialism,” a time when the United States and other major world powers rapidly expanded their territorial possessions.

The belief that the U.S. distinguishes from other nations because of its unique global mandate to promote liberty and democracy is partially embedded in American exceptionalism. This hypothesis always goes back to the words of Alexis de Tocqueville, a French analyst from 1800s who concluded that the United States is a special nation, "going on a path which is unlimited."

i believe it would be capitalism

i do not believe this was true indefiantly the native americans would have lsot aganist america one they didndt have the resources and allies that america had and 2   indians werent as advanced at the time as they were not 3 americans had the expreince because some of the soliders from other wars fought in that war and were attecked etc