Question: Northern Cape has the country that gained independence from what nation in 1990 on its northwest border?

Context paragraphs:
Northern Cape Heritage Resources Authority: The Northern Cape Heritage Resources Authority, previously called Ngwao Boswa jwa Kapa Bokone (seTswana for 'Heritage Northern Cape'), and commonly known as 'Boswa', is a provincial heritage resources authority established in 2003 by the MEC for Sport, Arts and Culture in the Northern Cape Province of South Africa, and reconstituted in terms of the Northern Cape Heritage Resources Authority Act, 2013.  It is an institution set up under the terms of the National Heritage Resources Act.  It is mandated to care for that part of South Africa's national estate that is of provincial and local significance in the Northern Cape.

Jacques Snyman: Jacques Snyman (born 10 May 1994) is a South African cricketer.  He was included in the Northern Cape squad for the 2016 Africa T20 Cup.  He made his Twenty20 (T20) debut for Northern Cape against South Western Districts on 16 September 2016.  He made his first-class debut for Northern Cape on 1 December 2016 in the 2016–17 Sunfoil 3-Day Cup.  He made his List A debut for Northern Cape on 17 December 2016 in the 2016–17 CSA Provincial One-Day Challenge.

Cape Verde–China relations: Cape Verde–People's Republic of China relations refers to the current and historical relationship between the People's Republic of China and Cape Verde.  The two states established bilateral relations in April 1976, shortly after Cape Verde gained independence from the Portuguese Empire.  Cape Verde is an adherent to PR China's One China Policy.  China maintained relations with Cape Verde throughout from 1970s to mid-1990s mainly to prevent the Republic of China (Taiwan) from gaining Cape Verde's international recognition through checkbook diplomacy.  However, in the mid-1990s, a number of Chinese capitalists began investing in the island nation and relations grew during the 2000s as a result.

Sylvia Lucas: Sylvia Lucas is the fourth Premier of the Northern Cape Province, South Africa, elected and inaugurated as successor to Hazel Jenkins.  She served briefly as Acting Premier and before that as MEC (Member of the Executive Council) for Environmental Affairs in the Northern Cape Provincial Legislature.  She was born on 22 April 1964, and grew up in Upington in the Northern Cape.

Namibia: Namibia ( , ), officially the Republic of Namibia (German:    ; Afrikaans: "Republiek van Namibië" ) is a country in southern Africa whose western border is the Atlantic Ocean.  It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and east.  Although it does not border Zimbabwe, a part of less than 200 metres of the Zambezi River (essentially a small bulge in Botswana to achieve a Botswana/Zambia micro-border) separates the two countries.  Namibia gained independence from South Africa on 21 March 1990, following the Namibian War of Independence.  Its capital and largest city is Windhoek, and it is a member state of the United Nations (UN), the Southern African Development Community (SADC), the African Union (AU), and the Commonwealth of Nations.

Northern Cape Division: The Northern Cape Division of the High Court of South Africa (formerly named the Northern Cape High Court and the Northern Cape Provincial Division, and commonly known as the Kimberley High Court) is a superior court of law with general jurisdiction over the Northern Cape province of South Africa.  The division sits at Kimberley.

Cloete Buitendag: Cloete Buitendag (born 18 May 1993) is a South African cricketer.  He was included in the Northern Cape squad for the 2016 Africa T20 Cup.  He made his first-class debut for Northern Cape in the 2016–17 Sunfoil 3-Day Cup on 20 October 2016.  He made his List A debut for Northern Cape in the 2016–17 CSA Provincial One-Day Challenge on 13 November 2016.

John Block (South African politician): John Fikile Block (born 10 February 1968) was the Provincial Chairman of the African National Congress in the Northern Cape Province, South Africa, and was a Member of the Executive Council (MEC) for Finance, Economic Development and Tourism in the Northern Cape Provincial Government.  Block was found guilty of fraud, corruption and money laundering by the Northern Cape High Court in 2015.  In December 2016 he was sentenced to 15 years imprisonment.

History of the Northern Cape: The concept of the Northern Cape as a distinct geo-political region of South Africa coalesced in the 1940s when a "Northern Cape and Adjoining Areas Regional Development Association" was formed and the first map featuring the name "Northern Cape" was published.  The geographic spread to which the term applied was not fixed until 1994, however, when it attained precise definition as the Northern Cape Province, one of South Africa's nine post-apartheid provinces.  Since then there have been boundary adjustments to include parts of the former Bophuthatswana (transferred from North West Province) adjacent to Kuruman and Hartswater.  Vryburg and Mafikeng, in the north eastern extremity of the former Cape Province - and hence regarded as part of the pre-1994 "Northern Cape" - are excluded, being part, now, of the North West Province.

Northern Cape: The Northern Cape (Afrikaans: "Noord-Kaap" ; Tswana: "Kapa Bokone" ) is the largest and most sparsely populated province of South Africa.  It was created in 1994 when the Cape Province was split up.  Its capital is Kimberley.  It includes the Kalahari Gemsbok National Park, part of the Kgalagadi Transfrontier Park, an international park shared with Botswana.  It also includes the Augrabies Falls and the diamond mining regions in Kimberley and Alexander Bay.  The Namaqualand region in the west is famous for its Namaqualand daisies.  The southern towns of De Aar and Colesberg, in the Great Karoo, are major transport nodes between Johannesburg, Cape Town and Port Elizabeth.  In the northeast, Kuruman is known as a mission station and also for its artesian spring, the Eye of Kuruman.  The Orange River flows through the province, forming the borders with the Free State in the southeast and with Namibia to the northwest.  The river is also used to irrigate the many vineyards in the arid region near Upington.

Supporting paragraphs: Northern Cape Namibia
Answer: South Africa