The correct phrase is "has become." You can use it when you are speaking about a change that has happened.
Example: His hobby of photography has become a thriving business.
Acapulco has became famous for beheadings.
The Bush Administration's war on terror has became a source of substantial profit for Halliburton.
What was intended as a starter house has became much more.
Very recently of course it has became local terror, regional terror and you have international terror.
She says that over the past year, her blog has became more campaign-focused.
In 2014 Russia's perception of its "game" with both Europe and America has became purely combative.
Cave has became revered in Australia, although some have found this strange.
Nearly eight decades later, she has became the world's oldest recipient of a doctorate – at 102.
It has became a local landmark, and Grimshaw is designing two more bridges nearby.
Ridding Orient House of Israelis has became the new Palestinian rallying cry.
In Europe, meanwhile, Bulgaria has became the second EU country after France to ban fracking.
