C. The people of Russia had an election and voted to become a communist country.
Https://www.quora.com/Is-it-true-that-the-USA-dropped-more-bombs-on-Laos-during-the-Secret-War-than-...
true
What tactical error resulted in the US troops' inability to successfully invade Canada?
The US troops decided to launch a three-pronged attack instead of combining strengths.