The primary event that led to the demise of the British Empire was World War II, which depleted Britain's resources and left the United States with most of the power after the war ended.
I think you can do all of the above but it depends what it's about
Answer:
Because they needed more land and invaders
Explanation:
The sentence that uses the word them as an indirect object would be Leo sent them a postcard from NASA.
Hope this helps and good luck with whatever it is you're doing!