I'm almost certain it was C because I know he was at all other battles and if it's not C than it was none of them
Grant fefused many of Lee's surrender. Grant didnt want to give Lee and terms. Grant said Unconditional surrender (non-negotiable (cause Grant didnt want Lee to ask for money or other things if he surrenders)) or war. This became a very famous speech and gave grant the nickname Ulysses "Unconditional" Grant. Lee eventually agreed to unconditional surrender.
Answer: The answer is actually B.
Explanation: When the Europeans came to Texas to settle there, they bought diseases like smallpox and infected the native Americans. The native Americans got mad that the Europeans were killing their people so they declared war, but because the Europeans had advanced weapons, they ultimately won the war and sent the remaining native Americans to reservations.