<em>"Before Long, ordinary people were allowed to run their own businesses"</em> develops the paragraph's sequence structure.
Explanation:
The phrase <em>"before long"</em> means not a long time ago, or simply in near past, in recent times. So the sentence<em>"Before Long, ordinary people were allowed to run their own businesses" </em>means that it was not long time ago, or it was just recently that people were allowed to start their own businesses.
A sequence structure tells the reader in the order in which the events or steps occur. e.g before, next, then, before long are some of the sequence text structure.
