Mostly, the Europeans dominated because their numbers or military technology and organization were superior.
Considering the alternatives, the only alternative that represents any sort of military power being evolved with it is:
d. They built infrastructure to keep military units traveling and intimidating the locals.
Also, the British and other countries did build many railroads in Africa.
A. Mali because Mansa Musa was the conqueror of the Mali empire
After the death of Timur in 1405, power began to shift from migrating peoples to sedentary populations living in large centralized empires. After about 1683, when the last Ottoman campaign against Vienna failed, the great empires for which this period is so famous began to shrink and weaken
Groups such as the Visigoths, Vandals, Angles, Saxons, Franks, Ostrogoths were tribes of people that helped bring about the collapse of rome.
For the answer to the question above, <span>The diagram below shows that the Roman Republic contributed to the development of democratic principles.
The Senate and Assemblies w</span><span>hich phrase completes the diagram?
The answer is </span><span>The Congress
I hope my answer helped you.</span>