Image caption The World Service has been called the jewel in the BBC crown

The BBC World Service will launch 11 new language services as part of its biggest expansion "since the 1940s", the corporation has announced.

The expansion is a result of the funding boost announced by the UK government last year.

The new languages will be Afaan Oromo, Amharic, Gujarati, Igbo, Korean, Marathi, Pidgin, Punjabi, Telugu, Tigrinya, and Yoruba.

The first new services are expected to launch in 2017.

African languages:

Afaan Oromo: Language of Ethiopia's biggest ethnic group

Amharic: Ethiopia's official language

Tigrinya: The main working language of Eritrea, along with Arabic. Also spoken in Ethiopia

Igbo: An official Nigerian language. Also spoken in Equatorial Guinea

Yoruba: Spoken in south-western Nigeria and some other parts of West Africa, especially Benin and Togo

Pidgin: A creole version of English widely spoken in southern Nigeria, Ghana, Cameroon and Equatorial Guinea

Pidgin - West African lingua franca

Asian languages:

Gujarati: Native to the Indian state of Gujarat but found around the Indian subcontinent and the world

Marathi: From the Indian state of Maharashtra, including India's commercial capital Mumbai

Telugu: Huge numbers of speakers, like many Indian languages, primarily in Andhra Pradesh and Telangana

Punjabi: One of the world's most populous languages, it is widely-spoken in Pakistan and parts of India

Korean: Spoken in North and South though the dialects have diverged. Pop culture slang and foreign loan words are notably more common in the South

"This is a historic day for the BBC, as we announce the biggest expansion of the World Service since the 1940s," said BBC director general Tony Hall.

"The BBC World Service is a jewel in the crown - for the BBC and for Britain.

"As we move towards our centenary, my vision is of a confident, outward-looking BBC which brings the best of our independent, impartial journalism and world-class entertainment to half a billion people around the world.

"Today is a key step towards that aim."

'Relevant as ever'

The plans include the expansion of digital services to offer more mobile and video content and a greater social media presence.

On Wednesday the BBC launches a full digital service in Thai, following the success of a Facebook-only "pop-up" service launched in 2014.

Other expansion plans include:

extended news bulletins in Russian, with regionalised versions for surrounding countries

enhanced television services across Africa, including more then 30 new TV programmes for partner broadcasters across sub-Saharan Africa

new regional programming from BBC Arabic

short-wave and medium-wave radio programmes aimed at audiences in the Korean peninsula, plus online and social media content

investment in World Service English, with new programmes, more original journalism, and a broader agenda

BBC World Service expansion £289m investment 11 new languages 12 new or expanded daily TV and digital bulletins

40 languages covered after expansion

500m people reached by 2022 - double the current number

1,300 new jobs, mostly non-UK Getty Images

Fran Unsworth, the BBC's World Service director, said: "Through war, revolution and global change, people around the world have relied on the World Service for independent, trusted, impartial news.

"As an independent broadcaster, we remain as relevant as ever in the 21st Century, when in many places there is not more free expression, but less.

"Today's announcement is about transforming the World Service by investing for the future.

"We must follow our audience, who consume the news in changing ways; an increasing number of people are watching the World Service on TV, and many services are now digital-only.

"We will be able to speed up our digital transformation, especially for younger audiences, and we will continue to invest in video news bulletins.

"What will not change is our commitment to independent, impartial journalism."

The new language services mean the BBC World Service will be available in 40 languages, including English.

Lord Hall has set a target for the BBC to reach 500 million people worldwide by its centenary in 2022.

Follow us on Twitter @BBCNewsEnts, on Instagram at bbcnewsents, or if you have a story suggestion email entertainment.news@bbc.co.uk.