There are at least 3, actually:
Susan B. Anthony on $1 coins from 1979-81 and 1999
Sacagawea on $1 coins starting in 2000
Helen Keller on Alabama State Quarters issued in 2003
Martha Washington also appeared on two forms of currency, a coin, and a paper bill(which she is the only female in American history to appear on paper currency).
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the great depression and the dust bowl
the great depression and the dust bowl
Which two developments following the Civil War most helped open the American West?"
Sacajawea and Susan B Anthony are the only women to appear as the primary portrait on a US circulating coin. Helen Keller also appears on the reverse side of Alabama state quarter but hers isn't considered to be the main portrait.
Many groups in American society have faced discrimination including: African-Americans (slavery, segregation) women (lack of vote, inequitable pay)