North America has always been more accessible to strangers than South.
 Thomas Jefferson, Notes on the State of Virginia (1785). copy citation

Context

“seems passing to that awful dissolution, whose issue is not given human foresight to scan*. * In a later edition of the Abbé Raynal's work, he has withdrawn his censure from that part of the new world inhabited by the Federo-Americans; but has left it still on the other parts. North America has always been more accessible to strangers than South. If he was mistaken then as to the former, he may be so as to the latter. The glimmerings which reach us from South America enable us only to see that its inhabitants are held under the accumulated pressure of slavery, superstition, and ignorance.” source