Timed assessment, answer quickly please Why was the 1469 marriage of Ferdinand and Isabella important?

It marked the end of warfare in Spain.
It resulted in an era of religious tolerance in Spain.
It united two kingdoms and laid the foundation for modern Spain.
It forced Spaniards to give up any ideas of founding colonies.

C. It united two kingdoms and laid the foundation for modern Spain.

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name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation:

ghana achieved independence peacefully, while algeria gained independence through an armed struggle.