domesticate
verb (used with object)
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
By Franklin's era, archaeologists speculate that Native Americans had been domesticating turkeys for more than 1500 years.
From Science Magazine ● Aug. 8, 2012