Interstate commerce refers to trade between
a.
two geographic regions
c.
the states
b.
two different continents
d.
two different countries

The states

Insterstate commerce, as the name indicates, refers to the buying, selling and exchange of commodities, money or goods between different states. This type of commerce is regulated by the federal government (as established in Article I of the United States Constitution).

a phrase from a poem by ralph waldo emerson about the battle of lexington and concord. emerson's words read, “here once the embattled farmers stood / and fired the shot heard round the world.”