Here's why:
* Compound sentences are joined by a semicolon when the clauses are closely related in meaning. The semicolon acts as a stronger pause than a comma, but doesn't necessarily require a specific transitional word.
* Transitional words can be used after a semicolon to show the connection between the clauses. However, they are not mandatory.
Examples:
* Without a transitional word:
* The rain poured; the wind howled.
* With a transitional word:
* The rain poured; consequently, the wind howled.
Common transitional words used after a semicolon:
* Adding information: furthermore, moreover, in addition, besides
* Showing contrast: however, nevertheless, on the other hand, conversely
* Showing cause and effect: therefore, thus, consequently, as a result
* Showing time: then, next, meanwhile, afterward
Remember:
* The choice of transitional word depends on the relationship between the clauses.
* You don't *need* a transitional word after a semicolon, but it can help clarify the connection between the clauses.
Let me know if you have any other questions!