The First Half of the 20ᵗʰ Century Is Called the Age

The first half of the 20ᵗʰ century is called the age of extremes because

A) most of the action occurred near the north and south poles
B) very short and very tall people went nuts
C) there were many revolutions and two large world wars
D) not much happened because the internet had not yet been invented
E) popular music became much louder