British Columbia is the westernmost province of Canada, with a population of more than four and a half million people. It is located between the Pacific Ocean and the Rocky Mountains. British Columbia is also a component of the Pacific Northwest and the Cascadia bioregion, along with American states Alaska, Idaho, Montana (western portion), Oregon and Washington. 

The first British settlement in the area was Fort Victoria, established in 1843, which gave rise to the city of Victoria, at first the capital of the separate Colony of Vancouver Island. Subsequently, on the mainland, the Colony of British Columbia (1858–66) was founded by Richard Clement Moody and the Royal Engineers, Columbia Detachment, in response to the Fraser Canyon Gold Rush. Moody was Chief Commissioner of Lands and Works for the Colony and the first Lieutenant-Governor of British Columbia: he was hand-picked by the Colonial Office in London to transform British Columbia into the British Empire's "bulwark in the farthest west", and "to found a second England on the shores of the Pacific". Moody selected the site for and founded the original capital of British Columbia, New Westminster, established the Cariboo Road and Stanley Park, and designed the first version of the Coat of arms of British Columbia. Port Moody is named after him.
its situated in between what?
between the Pacific Ocean and the Rocky Mountains.