The fundamental sense of freedom is freedom from chains, from imprisonment, from enslavement by others. The rest is extension of this sense, or else metaphor. ↗
We have had a great depression in agriculture, caused mainly by several seasons of bad harvests, and some of our traders have suffered much from a too rapid extension in prosperous years. ↗
Which I would've done 'cause I volunteered for the draft which meant that I only had to do two years. But when the Cubans had missiles in the Canal and Kennedy made the extension, I was one of the ones who had enough time to be extended. ↗