Why do you think countries did not cross the Atlantic Ocean to trade?

Across the Atlantic Ocean remain hidden and unknown to the rest of the World.

Explanation:

Before Columbus made his discovery, no one knew about the existence of the New World. America so-called New World remain hidden for centuries as it was separated from Europe and remained protected by oceans surrounding it. Christopher Columbus began his journey in quest of a westward route (new route) to Asia. On his way to find India, he found indigenous people and soon released that he found a New World. The trade across the Atlantic Ocean only began after the European powers began to establish colonies. The trade-only began through the Columbus exchange and the Triangular Trade.

this is not a question its simply asking you to read and write a few sentences and   the question on the bottom its fairly easy, you can do this!

a) trade was one of the most effective ways.