Short answers, pulled from the story.
Patrice Lumumba was born on the 2nd of July 1925 in Onalua within the Katakokombe region of Kasai province. He was originally named Isaïe Tasumbu Tawosa but carried the name Élias Okit'Asombo before adopting the surname Lumumba.
Patrice Lumumba became Prime Minister after his Mouvement National Congolais party won a plurality in national elections held between May 11 and 25 1960. The Chamber of Deputies voted 74 for 5 against one abstention to officially invest his government by the 23rd of June 1960 following pressure from delegates regarding his trial.
The mutiny erupted on the 5th of July 1960 when General Émile Janssens demanded discipline while maintaining unchanged conditions after independence. Soldiers felt disappointed by the slow pace of reform and the failure of ministers to improve troop situations leading them to seize the armoury and spread violence across Lower Congo.
Patrice Lumumba was executed on the night of the 17th of January 1960 by firing squads commanded by Belgian contract officer Julien Gat under Katangan authorities. Orders were given by Katangan leaders including Moïse Tshombe and Belgian officials such as Police Commissioner Frans Verscheure who oversaw the disposal of his remains.
Belgium formally apologized to the Congolese people in February 2002 admitting moral responsibility and irrefutable portion of responsibility for events that led to his death. Investigations revealed significant covert intervention efforts spending modern equivalent six point two million euros supporting anti-Lumumba politicians and opposition networks.