
<h2>The 3 sentences are:-</h2>
- In the evenings, She sits on the front porch to admire her immaculate lawn.
- Flipped on its back, the beetle that Clara soaked with insecticide dies under the refrigerator.
- He's been singing all day.

B. If it rains is a subordinate clause
It is true that England expanded her commercial empire in the 19th century.
It is a quote made when slavery was there is the United States, when most of the people tried to discriminate people on the basis of their race.
If you're asking in Grammatical aspect, then there is nothing complex in this sentence, just means, that if you are black that it's a bad thing [ just by this quote ]
Hope this helps!