Beginning in 510 b. c. the roman republic began a long period of expansion, but it was not considered an empire until the throne was occupied by

a) titus, son of vespasian.
b) augustus, nephew of julius caesar.
c) caracalla, son of alexander the great.
d) vespasian, emperor of the flavian dynasty.

the answer is B) Augustus, nephew of Julius Caesar.

are their options?

otherwise i can't

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.