See [Imperialism].
Territories, slavery in, [411], [416], [417]-[420], [430].
Texas, annexation of, [374], [375];
boundary dispute with Mexico, [377];
and the war with Mexico, [377]-[387];
secedes, [440];
readmitted, [574].
Thames River, battle of, [305].
Thirteenth Amendment, [546], [p. 435 n.];
accepted by Southern states, [568].