Newspaper editor John O'Sullivan coined the term Manifest Destiny in 1845 to describe the essence of this mindset, which was a rhetorical tone. It was used by Democrats in the 1840s to justify the war with Mexico and it was also used to divide half of Oregon with the United Kingdom.But Manifest Destiny always limped along because of its internal limitations and the issue of slavery, says Merk. It never became a national priority.t was used by Democrats in the 1840s to justify the war with Mexico and it was also used to divide half of Oregon with the United Kingdom. But Manifest Destiny always limped along because of its internal limitations and the issue of slavery, says Merk.
For that reason, experts considered pregnancies to be full term at 37 weeks. Then in 2013 the American College of Obstetricians and Gynecologists (ACOG) and the Society for Maternal-Fetal Medicine (SMFM) reviewed the research and decided to change the definition of full term to 39 weeks.
Exactly what it means for a pregnancy to have reached full term is changing, doctors say. Two leading groups of doctors announced today the label term pregnancy â which traditionally refers to a pregnancy between 37 and 42 weeks of gestation â should be discouraged.Instead, doctors should use four separate names when discussing this time period: early term, full term, late term and post-term.wo leading groups of doctors announced today the label term pregnancy â which traditionally refers to a pregnancy between 37 and 42 weeks of gestation â should be discouraged. Instead, doctors should use four separate names when discussing this time period: early term, full term, late term and post-term.