Designer is a vague term which usually implies the task of creating or of being creative in a particular area of expertise. Often times it is used to reference someone who draws or in some ways uses visual cues to organize their work.
... of the Pacific and Antarctica
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Eric the Red, (c.950-1003), explored and colonized Greenland
Leif Ericsson, (born 970), attempted to colonize Vinland
Georg ...