Final answer:
Joseph recommended constructing more granaries to store surplus grain during seven years of plenty to use during the following seven years of famine.
Step-by-step explanation:
Joseph not only interpreted Pharaoh's dream, he also recommended constructing more granaries. Joseph's interpretation of the dream was that Egypt would experience seven years of plenty followed by seven years of famine. To prepare for this, he advised the Pharaoh to store surplus grain during the years of plenty in granaries to be used during the years of famine. This strategy was intended to ensure that the population of Egypt would be able to survive the famine by rationing out the stored grain wisely over the years of scarcity.