Eight states became part of the United States between August 10th 1821 & September 9th 1850.
In chronological order they were... Missouri, Arkansas, Michigan, Florida, Texas, Iowa, Wisconsin, & California
The United States of America.
The united states joined WWII.
14
The United States of America.
When Texas joined the Confederate States of America. Also known as The United States of America.
Alaska and Hawaii are not directly connected to the other 48 states.
Philadelphia was in the colony of Pennsylvania until it joined the United States of America as the second state on December 12, 1787. Philadelphia was in the colony of Pennsylvania until it joined the United States of America as the second state on December 12, 1787.
Alabama and Arkansas declared their secession from the United States and joined the Confederate States of America.
It was between the Confederate States of America and the United States of America.
The United States of America.
There were 48 US States when Alaska joined the Union.
Canada is a separate country, it is NOT part of the United States of America. However, Canada and the USA are both in the continent of North America.