Why did european exploration of the western hemisphere accelerate in the late 15th century?
a) orders of the kings and queens of europe
b) improvements in sails, ship hulls, and navigation equipment
c) a desire to find new markets in which to sell european goods
eliminate
d) the need to find new places to send their growing populations

B)improvements in sails, ship hulls, and navigation equipment  

Explanation:

During the fifteenth century the Portuguese chose as an issue of strategy to test in the area. In view of that experience they attempted another ship configuration, called the caravel. These boats were fixed so they could utilize either square or lateen sails, the two of which were conveyed. They likewise utilized various poles, which helped mobility and included speed when cruising at a point to the breeze.  

With caravels the Portuguese discovered they could really cruise straightforwardly into the breeze by "attaching" . This gave them the certainty to go further and further.  

Then another new ship configuration was presented, the carrack. These were bigger that caravels, and had raised decks fore and behind that could hold gigantic gun.

The Portuguese, at that point the Spanish, and later others, utilized caravels to discover new ocean courses to the Orient, and found "new" arrives in the Americas. Carracks let them convey the freights, pioneers, warriors and capability they expected to misuse these new routes and new lands.

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