The American frontier is generally considered to have disappeared by the 1890s. The U.S. Census Bureau declared in 1890 that the frontier line was no longer discernible, as settlement had extended across the continent. This marked the end of an era characterized by westward expansion and the idea of the frontier as a place for opportunity and adventure.
The future tense is will disappear.(The traditional first person was "shall disappear.")
No It does not disappear
The New Frontier.
the 5 western frontiers are the indian frontier the farming frontier the cattle frontier the mining frontier and the buffalo frontier
The plural of disappear is disappears. As in "the magician disappears.
The present tense of disappear is:I/You/We/They disappear.He/She/It disappears.
it never did disappear
Disappear
No fish can't disappear
Frontier.
The past tense of disappear is disappeared.