What do some historians believe led to spain’s defeat? read the “recent research”
section.

Spanish Armada defeated. Off the coast of Gravelines, France, Spain's so-called “Invincible Armada” is defeated by an English naval force under the command of Lord Charles Howard and Sir Francis Drake. ... Its hopes of invasion crushed, the remnants of the Spanish Armada began a long and difficult journey back to Spain.

Explanation:

"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."