collapse is good
The inventor invented an invention.
That is a complex problem.
You have a complex sentence. Best is the last word of a complete sentence. When is an adverb. It is followed by the word They. The word They starts a complete sentence. Thus, the word when makes the second sentence subordinate to the first sentence. That makes it complex.
I was very complex with my writing.
i need a sentence that have the word unborn
I can feel your heart without even touching it.
a compound sentence having a word bewilder?
All of the answers were good, although some information was considered excess.
I invented the kite.
it could be something like this: I am extremely thankful, due to my mom, because i have new clothes. Sorry this isn't very good but it is still a complex sentence with thankful!
Somewhere near the end of the sixth day, God invented chocolate, and He saw that it was good.