Sailors. It's hard to be a lot more specific than that.
Shipping lanes are not preexisting "things" to be "discovered". They're the best routes for navigation, based on distance, current, and wind (in the age when that was a factor).
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Trappers opened routes to Alta California to find new areas that had fur animals to trap. They discovered new routes while looking for new places to trap beavers and other animals.
Spain and Portugal were the two main countries that sought to explore new sea routes during the Age of Exploration in the 15th and 16th centuries. They were driven by a desire to find faster and more efficient trade routes to Asia.
To find a route to Asia.
It was in pursuit of such trade routes the Columbus "discovered" the New World.
Europeans began looking for new sea routes to Asia.
Europeans began looking for new sea routes to Asia.
Europeans began looking for new sea routes to Asia.
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It was a need to find sea routes for easy transport of trades like black pepper
New Routes was created in 1970.
The importance of sea routes is to keep product and passengers safe while traveling on the sea. A sea route that follows the Tradewinds, makes it possible for ships to travel with the wind at their backs to reduce fuel consumption or maximize the use of sails. Sea routes also make it possible to reach destinations sooner.