What is a fortification?
1.wall
2.moat
3.tower
4.bridge

wall

Explanation:

a strong wall or other reinforcement built to protect a place against attack. or   the action of building or process of being built.

the answer would be a i think?

"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."

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explanation: