noun
ADJECTIVE
▪ new
▪ modern , present
▪ early , past
▪ historical
VERB + EPOCH
▪ mark
▪
The dropping of the first atom bomb marked a new ~ in warfare.
PREPOSITION
▪ during an/the ~ , in an/the ~
▪
the importance of the computer in the present ~
▪ ~ of
▪
an ~ of great social change
▪ ~ in
▪
Welfare reform was an ~ in the history of US social policy.
PHRASES
▪ the beginning of an ~ , the end of an ~