, Physiologist. 1  In four chambered avian and mammalian hearts, the two upper chambers are known as the atria. The atria are believed to act as primer pumps which boost the end diastolic volume (the volume at the end of ventricular filling) just before contraction of the ventricles.
Disunion follows the Civil War as it unfolded. New Orleans was the jewel of the Confederacy. In addition to being the Southâs largest city, it boasted considerable industry that produced ironclads, munitions and uniforms, among other items. More important, it controlled access to the Mississippi River from the Gulf of Mexico.
There was a fear that if America did not purchase New Orleans from France, it could lead to war. The change of ownership of this key port resulted in its closing to Americans. Therefore, Jefferson sent envoys to France to try and secure its purchase. Instead, they returned with an agreement to buy the entire Louisiana Territory. America did not have the money to pay the $15 million outright so they instead borrowed the money from Great Britain at 6% interest.