Realised that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.
I believe the answer is B but im not 100% sure
I may not be correct but I believe that Martin Luther King implied that if they were to protest with violent it would only result in more violence as a retaliation by the government. So by doing peaceful protest the government didnt have an actual solid reason to attack them, so when the government did enact violence on them it caught the attention of people around the world.
Answer:
three countries agreed to support each other if attacked by either France or Russia
Explanation: