Throughout the nearly 250 years of U.S. history, every state has played an important part in shaping the country into what it is today. Though each has made its mark on American history, in all 50, one event stands out as the most significant to have occurred within its borders.

In many cases, the event has had implications beyond those borders, with profound consequences for the nation and in some cases the world.

24/7 Tempo reviewed state historical information, research sources, and media reports of significant events throughout U.S. history to determine themississ most important event in the history of each state.

Some states’ most important contribution to American history involved passing groundbreaking legislation that broke barriers – whether it was declaring independence from England in the 1700s or expanding rights for residents in the 20th and 21st centuries.

Many states are notable for their contributions to the scientific or economic advancement of the nation as a whole. Some, unfortunately, are best known for major tragedies or natural disasters that gripped the nation and altered life for thousands, if not millions. This is the worst natural disaster in the history of each state.

For a handful of states, their most important moment came during the civil rights movement. In these places, significant protests or legal breakthroughs in the states advanced the rights of Black Americans. These are the most important moments of the civil rights movement.

Click here to see the most important historical event in every state