sentences:  Later, he became a firm opponent of president Rómulo Betancourt (first presidency 1945-1948).In 1945, he broke with the PCV over their support of Betancourt and formed his own political party, the Revolutionary Party of the Proletariat (PRP).The PRP was short-lived, lasting from the overthrow of the Gallegos government (in office February 1948-November 1948) until the rise of Marcos Pérez Jiménez.