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.
Rethinking Full Term. Preterm labor can lead to a lot of problems for you and your baby. Facebook Pinterest Google Plus Text Email Comments. A newborn is more likely to be healthy if the mom's pregnancy lasts at least 39 weeks, according to a wealth of recent research. Doctors typically refer to term or full term as the period from 37 weeks to 41 weeks, but it may be time for a change, according to commentary in the journal Obstetrics & Gynecology. Babies who are born between 37 weeks and 39 weeks have a higher risk of health problems and delays in reaching developmental milestones.