I'm going to mark your "post" like a teacher marks an essay.
America is home to some of the biggest companies in the world.
Such as?
We paved the way for liberty and freedom.
Complete conjecture
We have people like Abraham Lincoln, Andrew Jackson, George Washington, etc.
It took America until 1863 to abolish slavery, good job honest abe, Canada did that in 1819. Washington was a General, he had no business being the President
We made the first Steamboat revolutionizing transit and trade worldwide.
Using the Steam engine, invented in England.
We are home to the largest economy in the world
For now. Economists predict that by 2050 you'll be at #3 behind China and India
We created the first trans-continental railroad thus furthering our transit and trade markets.
The train was invented in by an Englishman by the name of Richard Trevethick in 1803. All you did was take an English idea and make a long track.
We invented the lightbulb and 'discovered' electricity
Using D/C current, a system of electricity not nearly as efficient as A/C which is what is currently in place. Oh did I mention that Tesla is the one who discovered electricity and developed the A/C form of electricity? A Serbian, not an American.
We re-invented the term 'production' when Eli Whitney invented the Cotton Gin allowing us to mass produce cotton by the billions.
Systems of mass production of cotton can be traced back to the British Industrial Revolution. Also the British are the one's that established the cotton market in the Americas.

We freed ourselves from a maniacal king and then kicked his ass in the same breath.
King George wasn't, "maniacal", all leading colonial European powers enacted a system of Mercantilism, which solely benefits the parent state, ie England. The American Revolutionary war's success can be attributed to the failure of General Gage, and the support of the French crown in an attempt to weaken their greatest rival, England.
We were the first in assembly line production thus furthering our economical advances
Are you confusing America with England? The first assembly line came about during the Industrial Revolution, ie ENGLAND.
We invented the sextant
Two men were responsible for the sextant, one Brit, and one American.
We redefined warfare with the atomic bomb.
Warfare did not change at all due to the Atomic Bomb. Alliances were forged, and wars between nuclear powers were avoided, but the fundamentals of warfare were untouched.
We assassinated the world's most feared terrorist
Osama is the world's most feared terrorist? No, the man who assassinated Franz Ferdinand started a Geo-Political war. Osama is a joke, if you believe otherwise you're just a tool that buys into American fear-mongering in the form of xenophobic propaganda.
We have the most advanced medical care in the world.
Your healthcare system is going to bankrupt your nation.
we have been in quadruple(+) the wars Canada has been involved in
You think its a good thing that your country gets involved in EVERY conflict around the world? It's why everyone hates you. Canada fought in wars of honor, fighting for the English crown and for our freedom against the expanding Americans. American
**** heads got high in Vietnam and went around killing civilians, which is why there was a public outcry to drop the futile invasion.
The Gold rush?
A bunch of landless thieves ran around the continent picking gold out of streams. The gold rush actually helped unify Canada, as those filthy pirates encroached into BC. So thanks.
Armstrong walking on the moon
Do you have any idea just how much this has been disputed? Why is walking on the moon an achievement anyway? There are no resources and absolutely nothing was gained by it.
Lewis and Clark expansion
First of all, you mean exploration. Those halfwits needed a native savage girl to take them to the LARGEST OCEAN IN THE WORLD.
Vancouver Canada is home to the biggest concentration of junkies in the world.
You managed to find the one place in Canada that has issues. I could find a hundred cities in America with comparable issues.