Skateboarding originated in Venice, California.

the time was the mid-seventies.
There was a drought.
The swimming pools were empty.
A)Skateboarding originated in Venice,California,there was a drought, swimming pools were empty,the time was the mid-seventies.
it says combine each of the following sets of sentences into on sentence that used subordination to signal the relationships among ideas.

Here's a list of subordinating conjunctions:

http://www.chompchomp.com/terms/subordinateconjunction.htm

Use one of these to connect your sentences. Some rephrasing may be needed, and you may need to use a coordinating conjunction, too. (FANBOYS)

Skateboarding originated in Venice, California.

There was a drought.

Swimming pools were empty.

The time was the mid-seventies.