Lisbon Regicide
The assassination of King Carlos and the Prince Royal was the effective end of a constitutional monarchy in Portugal (later confirmed by the 5 October 1910 revolution). The regime functioned for another 33 months with growing agitation and demands for reform (although considerably less than in the future First Republic). It cannot be denied that the weak and permissive attitude in the Government of Acclamation was an incentive for the Republican Party to attempt another coup. The assassinations did not change the system of government; instead, they delayed the change.
Portuguese Colonial War
By this time the regime in Portugal had been through two major political upheavals: from monarchy to republic in 1910 and then to a military dictatorship after a coup in 1926. These changes resulted in a tightening of Portuguese control in Angola. In the early years of the expanded colony, there was near constant warfare between the Portuguese and the various African rulers of the region. A systematic campaign of conquest and pacification was undertaken by the Portuguese. One by one the local kingdoms were overwhelmed and abolished.