Examlex
Norethynodrel, a component of the first combined oral contraceptive, has the following structure. Identify the functional groups in Norethynodrel.
African Americans
Citizens of the United States with partial or total ancestry from any of the black racial groups of Africa, having a distinct cultural and historical heritage.
Persian Gulf War
A conflict between Iraq and a coalition of countries led by the United States in 1990-1991, triggered by Iraq's invasion of Kuwait.
Presidential Election
The process by which a president is selected in a country, often involving a direct vote by the electorate or a vote by an electoral college following a national election.
Bush Administration
The executive period of George W. Bush, the 43rd President of the United States, which spanned from 2001 to 2009, marked by events such as the September 11 attacks and the initiation of the Iraq War.
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