You have to be kidding? Why? We really don't even understand which direction they migrated from, nor the route.
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This so reminds me of the why did the chicken cross the road questions.
why did Polynesians migrate?
2 answers
Also check these sites for some very interesting theories.
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http://www.paulwaters.com/migrate.htm
http://www.experiencefestival.com/human_migration_-_polynesian_migration
http://en.wikipedia.org/wiki/Polynesia
http://polynesianlineage.tripod.com/
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http://www.paulwaters.com/migrate.htm
http://www.experiencefestival.com/human_migration_-_polynesian_migration
http://en.wikipedia.org/wiki/Polynesia
http://polynesianlineage.tripod.com/