He confederation government<span> could not handle civil disorder and caused leaders throughout the country to worry about the </span>confederation's<span> ability to handle such events.</span>
1. D
2. B
3. C
I believe this is the answer.
Answer: D
A catalyst is a substance that alters the reaction and doesn't involve in the reaction.So if the Manganese was a catalyst the mass would not have decreased,it would just continue aletring the reaction until its used up.
The Manganese is not acting as a catalyst
Correct answer is: B) Istanbul