An atrial septal defect (ASD) is an opening or hole in the wall that separates the two upper chambers of the heart.This wall is called the atrial septum. The hole causes oxygen-rich blood to leak from the left side of the heart to the right side.n atrial septal defect (ASD) is an opening or hole in the wall that separates the two upper chambers of the heart.
The Connecticut Compromise (also known as the Great Compromise of 1787 or Sherman's Compromise) was an agreement that large and small states reached during the Constitutional Convention of 1787 that in part defined the legislative structure and representation that each state would have under the United States Constitution.
It was during the Federal Convention at Philadelphia held during the year 1787 that the Great Compromise of the Constitution was born. It is also known as the Connecticut Compromise. There were eleven days of debate before the compromise could be reached. More..