The term 'IMPORTANT ERA' can be broken down into two crossword solutions: EPOCH (5 letters) and IMPORTANT (9 letters). An EPOCH is a period of time in history or a particular stage in the development of something. It is usually marked by significant changes or developments. An IMPORTANT era is a period of time that is particularly significant or noteworthy. It is often characterized by significant events, changes, or developments that have a lasting impact.