The Mexican, or its other name, the Mexican-US War, was in 1846. There is no direct connection to the US Civil War, other then that many of the generals of the Civil War, fought together and came to know each other.
the first battle of the civil war was the Battle of Fort Sumter.
Antitam was the first major battle in the Civil War.
Fort Sumter then First Battle of Bull RunThere are varying opinions on what qualifies as the first battle of the Civil War. Fort Sumter was the first conflict and it led to the Civil War. But the First Battle of Bull Run was the first major land battle of the Civil War.
First Battle of Bull RunThe 1st Bull Run was in fact the first battle of the Civil War. The Attack on Fort Sumter only "led" to the Civil War.
First Battle of Bull Run (First Manassas) : the first major battle of the American Civil War .
The first major battle of the American Civil War was the First Battle of Bull Run or the First Battle of Manasas (they are the same battle but with a different name)
The Mexican Civil War.
It was the first time actual gunfire was exchanged. As such, it was the first battle of the Civil War.
The first major battle of the Civil War was the Battle of Bull Run in Prince William County in Virginia.
The Mexican War preceded the Civil War. Many of the Officers and Troops on both the Union and Confederate sides received their combat experience during the Mexican War.
The Thornton Affair.
It was the first major battle on the civil war. The Fort Sumter lead to the civil war.