I am pretty sure the answer is bottom one, and the second one!
Answer:
Here is a letter about Gandhi
Explanation:
Dear Gandhi.
It is a pleasure being able to speak with you. I want to give thanks to everything you have done to help this world. Your anti-violence ideology has helped many. Your impact on not just India, but the world as a whole, has been incredible and cannot be done by any other individual. Your activism is something I look up to.
You lead people to peace. You led people in a powerful peace and independence movement. That is amazing! The strength you had was incomparable to anybody else. You are truly a great soul, and in my opinion, one of the greatest leaders to have ever lived.
The first event that took place out of these options was the Spanish Conquest that destroyed the Aztec Civilization which was in 1519. Therefore the correct sequence is 3,1,2,4.
Biological warfare, also known as germ warfare, is the use of biological toxins or infectious agents such as bacteria, viruses, insects, and fungi with the intent to kill, harm or incapacitate humans, animals or plants as an act of war.
I would say B but I may be wrong