Answer the question at the end by quoting:

Kwame Nkrumah PC (21 September 1909 - 27 April 1972) was a Ghanaian politician and revolutionary. He was the first prime minister and president of Ghana, having led it to independence from Britain in 1957. An influential advocate of Pan-Africanism, Nkrumah was a founding member of the Organization of African Unity and winner of the Lenin Peace Prize in 1962. After twelve years abroad pursuing higher education, developing his political philosophy, and organizing with other diasporic pan-Africanists, Nkrumah returned to Gold Coast to begin his political career as an advocate of national independence.
Beginning in April 1949, there was considerable pressure on Nkrumah from his supporters to leave the UGCC and form his own party. On 12 June 1949, he announced the formation of the Convention People's Party (CPP), with the word "convention" chosen, according to Nkrumah, "to carry the masses with us." There were attempts to heal the breach with the UGCC; at one July meeting, it was agreed to reinstate Nkrumah as secretary and disband the CPP. But Nkrumah's supporters would not have it, and persuaded him to refuse the offer and remain at their head.  The CPP adopted the red cockerel as its symbol - a familiar icon for local ethnic groups, and a symbol of leadership, alertness, and masculinity. Party symbols and colours (red, white, and green) appeared on clothing, flags, vehicles, and houses. CPP operatives drove red-white-and-green vans across the country, playing music and rallying public support for the party and especially for Nkrumah. These efforts were wildly successful, especially because previous political efforts in the Gold Coast had focused exclusively on the urban intelligentsia.  The British convened a selected commission of middle-class Africans, including all of the Big Six except Nkrumah, to draft a new constitution that would give Ghana more self-government. Nkrumah saw, even before the commission reported, that its recommendations would fall short of full dominion status, and began to organise a Positive Action campaign. Nkrumah demanded a constituent assembly to write a constitution. When the governor, Charles Arden-Clarke, would not commit to this, Nkrumah called for Positive Action, with the unions beginning a general strike to begin on 8 January 1950. The strike quickly led to violence, and Nkrumah and other CPP leaders were arrested on 22 January, and the Evening News was banned. Nkrumah was sentenced to a total of three years in prison, and he was incarcerated with common criminals in Accra's Fort James.  Nkrumah's assistant, Komla Agbeli Gbedemah, ran the CPP in his absence; the imprisoned leader was able to influence events through smuggled notes written on toilet paper. The British prepared for an election for the Gold Coast under their new constitution, and Nkrumah insisted that the CPP contest all seats. The situation had become calmer once Nkrumah was arrested, and the CPP and the British worked together to prepare electoral rolls. Nkrumah stood, from prison, for a directly-elected Accra seat. Gbedemah worked to set up a nationwide campaign organisation, using vans with loudspeakers to blare the party's message. The UGCC failed to set up a nationwide structure, and proved unable to take advantage of the fact that many of its opponents were in prison.  In the February 1951 legislative election, the first general election to be held under universal franchise in colonial Africa, the CPP was elected in a landslide. The CPP secured 34 of the 38 seats contested on a party basis, with Nkrumah elected for his Accra constituency. The UGCC won three seats, and one was taken by an independent. Arden-Clarke saw that the only alternative to Nkrumah's freedom was the end of the constitutional experiment. Nkrumah was released from prison on 12 February, receiving a rapturous reception from his followers. The following day, Arden-Clarke sent for him and asked him to form a government.

what was it that he was leaving

UGCC and form his own party.

IN: Dion Francis DiMucci (born July 18, 1939), better known mononymously as Dion, is an American singer, songwriter whose work has incorporated elements of doo-wop, rock and R&B styles--and, most recently, straight blues. He was one of the most popular American rock and roll performers of the pre-British Invasion era. He had 39 Top 40 hits in the late 1950s and early 1960s as a solo performer, with the Belmonts or with the Del Satins. He is best remembered for the singles "Runaround Sue", "The Wanderer", "Ruby Baby" and "Lovers Who Wander", among his other hits.

By the end of 1960, Dion had released his first solo album on Laurie, Alone with Dion, and the single "Lonely Teenager," which rose to No. 12 in the US charts. The name on his solo releases was simply "Dion." Follow-ups "Havin' Fun" and "Kissin' Game" had less success, and the signs were that Dion would drift onto the cabaret circuit. However, he then recorded, with a new vocal group, the Del-Satins, an up-tempo number co-written with Ernie Maresca. The record, "Runaround Sue," stormed up the U.S. charts, reaching No. 1 in October 1961, and No. 11 in the UK, where he also toured. "Runaround Sue" sold over a million copies, achieving gold disc status.  For the next single, Laurie promoted the A-side, "The Majestic," but it was the B-side, Maresca's "The Wanderer," which received more radio play and climbed swiftly up the charts to reach No. 2 in the U.S. in February 1962 and No. 10 in the UK (the 1976 re-release made the UK Top 20). "The Wanderer" has been used in the post-apocalyptic role-playing game Fallout 4, both in-game and in a trailer of the same name released in 2015.  By the end of 1961, Dion had become a major star, touring worldwide and making an appearance in the Columbia Pictures musical film Twist Around the Clock. He followed with a string of singles - "Lovers Who Wander" (No. 3), "Little Diane" (No. 8), "Love Came to Me" (No. 10) - in 1962, several of which he wrote or co-wrote. He also had successful albums with Runaround Sue and Lovers Who Wander.  At the end of 1962, Dion moved from Laurie to Columbia Records; he was the first rock and roll artist signed to the label, which was an anomaly considering that its then-A&R director, Mitch Miller, passionately loathed that particular genre of music. The first Columbia single, Leiber and Stoller's "Ruby Baby" (originally a hit for the Drifters) reached No. 2, while "Donna the Prima Donna" and "Drip Drop" (another remake of a Drifters hit) both reached No. 6 in late 1963. (Dion also recorded an Italian version of "Donna the Prima Donna" using the identical backup vocals.) His other Columbia releases were less successful, and problems with his addiction and changing public tastes, especially The British Invasion, saw a period of commercial decline.

Do you know why Dion left the Belmonts in 1960?

OUT: