I think the first thing to note is that, in spite of centuries of belief to the contrary, Christopher Columbus did not technically discover America. In three voyages to the 'new world' he never once set foot on the North American continent. His initial voyage was a search for a sea route to Japan and the far East. However, he unexpectedly ran into land way short of his initial goal. In three voyages, he never got beyond the islands of the Caribbean.
When Columbus arrived in the new world in 1492, later referred to as America, the land he supposedly discovered was not an empty vast wilderness. It was a land already inhabited. The natives of America had migrated across the Bering Strait and settled into warmer areas of the continent. More than 75 million people lived in the new world consisting of the North and South American continents, 25 million of whom lived in North America.
About 3 thousand years ago, 2 thousand years before Christ, the Hopi Indians who live in what is now New Mexico were building cliff dwellings, farming and creating villages. When Julius Caesar was conquering Western Europe, an Indian culture called the Moundbuilders were making huge structures out of the earth in what is now the Ohio Valley. One of these structures was said to be over three miles long. The area served as a trading post of sorts, where people came from the West, the Gulf of Mexico and the Midwest for trade and the exchange of goods. So you can see, a system of trade and commerce existed before Columbus even set sail in search of the new route to the far East.
The Iroquois occupied what is now Pennsylvania and upstate New York. They lived in villages and had a very sophisticated social system, which was in many ways superior to the European culture. The land was worked in common and it was owned by the whole nation. Women held a high place in the Iroquois culture. Family names were tied to the women, not the man. If a man married, he joined the family of his wife. Women farmed the land while the men hunted for fish and game.
Power was shared by men and women and the European concept of male dominance was absent in the Iroquois culture. Children were not punished harshly and were taught equality in possessions. This was in direct contrast to the severe society of the Puritans and what the Europeans brought to the New World. The Europeans were a society of rich and poor, controlled by priests, governors and male heads of families. The Iroquois society had no laws, sheriffs, judges or juries, yet boundaries of behavior existed. If someone stole food or shamed their family, they were banished until they had morally atoned for their actions. They had no written language. Their history was passed on by oral tradition. This kind of community lasted long after the native people (referred to as Indians by the European explorers) were conquered.
Although the Iroquois Confederacy's Great Law of Peace did not directly serve as the basis for the U.S. Constitution, it is widely acknowledged that their political structure and principles influenced the thinking of the Founding Fathers of the United States of America—specifically the Iroquois model of a confederation of sovereign nations, a system of checks and balances, and consensus-based decision-making resonated with some of the framers of the Constitution.
This was the land Columbus is given credit for discovering—a land whose people were already highly evolved and successful rather than the savages Europeans assumed them to be.