The credit for the first working television system goes to John Logie Baird who demonstrated the first working television in 1925 in England. In 1929, the BBC began broadcasting television to the public which represented the first ever scheduled television service.
However, it's not quite as simple as one place. Baird started his work in Scotland, so part of the creation was done there. He used ideas of Russian inventors who were living in Europe. They contributed parts of the system but did not produce a working system. Then Philo Farsnworth, an American, demonstrated the first fully electronic television system in 1929. He took the technology forward by eliminating moving parts but his was not the first working system.
So, there is a choice of countries to consider.
Out There TV was created in 2001.
WE tv was created in 1997.
WILL-TV was created in 1955.
I-Television was created in 1992.
.tv was created in 1996.
ON-TV was created in 1977.
Me-TV was created in 2010.
On the Television was created in 1990.
TV Links was created in 2006.
TV Shop was created in 1989.
TV Land was created in 1996.
Rogers TV was created in 1968.