By 1200 c. e., improved agricultural technology had spread throughout much of sub-saharan africa primarily through the
a. development of oxen immune to diseases carries by the tsetse fly
b. discovery of gold that provided a means of exchange among groups
c. expansion of the sahara desert which forced berber people's to move south
d. migration of bantu speaking peoples with their knowledge of iron working

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

hope this : )

answer: an oligarchy is a political system in which the government is run by a group of noble families, or the elite wealthy members of a society. a present day oligarchic government is iran.

explanation: