The silk road was named retroactively, in the 19th century. what does "retroactive" mean?
question 4 options:

arbitrary or random

applying to something in the past

having to do with trade

referring to foreign cultures

Applying to something in the past. Having to do with trade.

Explanation: I looked it up, its as simple as that.

- "it was a failure that was an embarrassment for the kennedy administration."

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a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )