How did Japanese first sail the oceans?

How much does it cost to see the Sphinx? How much toll to randall island? What is the best way to set a humidifier? How much does it cost to build a aquifer? Why do the surface currents move in different direction of the wind? Do zoos abuse animals? How tall is mayon volcano in meters? How big is the seawall of Galveston? How long to travel 40 nautical miles at 14 knots? Why would a town want to attract more tourists? What forms the border between Missouri and Illinois? Can industry produce oxygen when there is no more trees? When the velocity of a stream suddenly decreases the sediment being transported undergoes an increase in? Is the Miami River a river in Ohio? What difficulties did the pioneers have when crossing a river? Is a warm water event that occurs in the tropical Pacific Ocean known as the butterfly effect? What was the mission san Carlos made out of? Is the gauged arch a type of arch? Where does the white marble for gravestones at Arlington National Cemetery come from? What continent does bering sea border?