In the 1640's the Dutch inhabitants of New Amsterdam built a 12' wall to keep

The Mexicans out?

The full title is: “In the 1640's the Dutch inhabitants of New Amsterdam built a 12' wall to keep the bad hombres out. In 1664 the British ignored the wall and took New Amsterdam by sea. It's now called New York. They took down the wall and built a street. It's called Wall Street“

Wall Street... OMG that makes so much sense now!!