The United States became serious about the Space Race when

The United States became serious about the Space Race when the Russians (Soviet Union) released Sputnik into space

Explanation:

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.”

continental currency was denominated in dollars from $​1⁄6 to $80, including many odd denominations in between.