secede
se·cede
verb
To withdraw formally from membership of a federation or body, especially a political state.
"The southern states voted to secede from the Union in 1860."
Thesaurus
Synonyms: break away, splinter
se·cede
To withdraw formally from membership of a federation or body, especially a political state.
"The southern states voted to secede from the Union in 1860."
Synonyms: break away, splinter