When was Pimpinella saxifraga introduced into north America?

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When were horses introduced to north America?

The prevailing belief is that the Spanish explorers brought thefirst modern horses to North America on their sailing vessels. Thiswas back in the 1500s. Historians believe tha

When were horses introduced to to North America?

Actually, and I say this with respect to the asker, horses weren't introduced to North America, they originated in North America. Don't ask me how they got over to Europe an