Complex sentence: In March 1933, President Franklin Roosevelt ordered that no more gold in the form of coins be released from the Treasury, and the Mint subsequently ceased to strike gold coins, ending the eagle series that had begun in 1795.
Split into simpler sentences: In March 1933, President Franklin Roosevelt ordered that no more gold in the form of coins be released from the Treasury. When this ban was not lifted, the Mint ceased to strike gold coins, ending the eagle series, which had begun in 1795.