In the 1880's, how were various European nations able to begin expanding into Africa and eventually gain control over most of the continent?

Europeans had better technology

Africans lacked tribal unity

all of the above

the development of quinine helped fight African diseases

What actions did americans take to show their patriotism after peal harbor

Concerns of the spanish treatment of what nation lead to the spanish american war

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.