What was the most important railroad during 1865-1900

Western sahara is occupied by whom? a. mauritania b. algeria c. morocco d. tunisia

If the united states became a "majority-minority” nation, o whites would be the majority, but there would still be ethnic minorities. there would be an equal number of whites and ethnic minorities. othere would be more ethnic minorities in the population than whites. o no one would be considered white or part of an ethnic minority group.

Which of these belongs to the united states after the spanish american war ?