The Jay Treaty was between the United States and
.

Great Britain

Explanation:

Jay Treaty, (November 19, 1794), agreement that assuaged antagonisms between the United States and Great Britain, established a base upon which America could build a sound national economy, and assured its commercial prosperity.

they have different colored collars

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.