The Renaissance Age was th age after the Middle ages.
Most physicians here indicate that babies should be on breastmilk or formula alone until they are 6 months old. However, when you baby is old enough to sit up unsupported, and starts taking keen...
A couple of alternatives would be 'eons' or 'millenia'
Ages and ages and ages means a really long time.
Many people use the two phrases the same way. But as far as professional history writing goes, the Dark Ages was the Early Middle Ages (476-100).