In what way did the year 1898 represent a turning point for the united states

The turning point would be the Spanish – American War. It was clashed between the United States and Spain in 1898. Conflicts began in the result of the inner eruption of the USS Maine in Havana Harbor in Cuba leading to United States involvement in the Cuban War of Independence. American attainment of Spain's Pacific possessions led to its participation in the Philippine Revolution and eventually in the Philippine–American War.

"the sepoy rebellion was the result of many, many influences and stressors on the cultures of india living under british rule. in britain, it's called the sepoy mutiny on the indian mutiny, but in india, it's called the first war of independence.

the main reason is concerned to the british paramountcy , the belief in british   dominance in india political, economic and cultural life had been introduced in india about 1820."

"they were forced to grow crops that benefited the colonizing nations instead of feeding their own people."