What Was the Greatest Development in American History Before the Year 1878?

As a nation, the United States has seen many significant developments throughout its history. But what was the greatest development in American history before the year 1878? Let’s take a closer look at some of the most important events and inventions that shaped the country during this time.

The American Revolution

Undoubtedly, one of the most significant developments in American history was the American Revolution. The Revolution marked a turning point in American history as thirteen colonies fought for their independence from British rule. The war lasted from 1775 to 1783 and resulted in the formation of a new nation- The United States of America.

Constitutional Convention of 1787

Following the revolutionary war, a group of delegates met in Philadelphia to draft a new constitution for the young nation. This document became known as the U.S Constitution and remains one of America’s most important founding documents. It established a framework for government that has lasted through centuries and set principles that continue to guide modern-day politics.

The Louisiana Purchase

Another crucial event in America’s early years was The Louisiana Purchase. In 1803, President Thomas Jefferson purchased over 800,000 square miles from France, doubling the size of America and expanding its borders westward.

The Railroad

One development that greatly impacted transportation and communication was the completion of America’s first transcontinental railroad in 1869. This achievement brought together East and West coasts for travel and commerce, greatly influencing economic growth across America.

The Telegraph

Another significant development during this time period was Samuel Morse’s invention of the telegraph. Invented in 1837, it revolutionized communication by allowing messages to be sent across long distances almost instantly.


In conclusion, there have been many vital developments throughout American history before 1878. From the American Revolution to the Louisiana Purchase and the invention of the telegraph, each of these events has had a significant impact on America’s growth and development. Choosing just one as the “greatest” is a difficult task, but they all played an essential role in shaping America into the country it is today.