The author says a caisson is kept free of water

because it is like

japan is located on a chain of islands called an archipelago. it is made up of four main islands and thousands of smaller ones. the terrain is mountainous, which means there is not a lot of good land for farming. because of the geography, the japanese relied on the sea for many aspects of daily life.

the answer is alexander graham bell.

the island of proikonesos, now called marmara island. in the 4tn century notable aristocracy from constantinople first settled on the island. by 569, many byzantine aristocrats had built palaces on the island and accepted it as their home. the byzantine royal presence on the island was strong.

in 395 with the division of the roman empire, the byzantine empire began for the island of ródos, now called island of rhodes, which was important because of its influence in maritime issues. the byzantine territory had rhodes as its capital of the islands; this caused massive murders because of its territorial occupation.