structure, and an isolation region in a third region of the substrate by exposing the surface of the substrate; removing a portion of the second LOCOS isolation structure in the isolation region in the second region to expose a portion of the surface of the substrate in the second region, such that a remaining portion of the second LOCOS isolation structure remains adjacent the isolation region in the second region; forming a trench in each of the isolation region in the second region and the isolation region in the third region, each of the trenches extending into the semiconductor substrate to a depth below the surface of the semiconductor substrate; filling the isolation region in the second region and the isolation region in the third region with ansign until later.

3.) Three of the first five presidents died on the Fourth of July. John Adams, Thomas Jefferson and James Monroe all died on the Fourth of July. Adams and Jefferson died on the same day in 1826, the 50th anniversary of the United States of America.

4.) The Declaration of Independence was signed by 56 men from 13 colonies.

5.) The Fourth of July did not become an official federal holiday until 1938.

6.) The United States is not a democracy. It is a republic.

7.) In 1776 there were 2.5 million people living in our new nation. Today the population of the United States is 321 million.

8.) Every 4th of July the Liberty Bell in Philadelphia is tapped (not actually rung) thirteen times in honor of the original thirteen