Skip to main content HAPPY BIRTHDAY, AMERICA! Enjoy our celebratory mix of engineering and U.S. history. Test Your Smarts! Win Prizes! This month, as the United States of America celebrates its momentous 250th anniversary, we reflect on both our nation's and our industry's historic moments and milestones, all stemming from the sweltering streets of Philadelphia in 1776. At the end of the quiz, be sure to enter for your chance to win a $25 Amazon gift card!