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Answer:
Resentful
Explanation:
Definition: "feeling or expressing bitterness or indignation at having been treated unfairly." this perfectly describes Elena's feeling toward her friend.
* they invented the zero and the number system
* they invented the decimal system
* contributed to the valur of pi, alg, trig, calc, etc
many mathematical terms were originated in India
An autocracy is what it’s called
The answer is positive......