Gandhi was known to be a political and a spiritual leader. Being someone to look up to, he had set himself as an example of childmarriage. Yes, he himself wrote his narrative on marriage with bitter regards of the past. He somehow blamed his father for making him marry early. He in fact stated how his early years could have dictated his life if had it not been for the death of the two girls chosen for him.
He clearly stated the difference between betrothed and marriage. The first being a preliminary promise to the parents of the girl and the boy that their child would be together. He claimed to be betrothed thrice and seven was his age on the final betrothment. The second, which is marriage, is having consent with both parties. He married early at the age of thirteen which for him was not appropriate.
In the end, he was very much concerned of how this will affect the persons involved within the relationship. He was after the health issue of young girls unfit to bear a child at a younger age and infants dying after delivery.
A country may be fighting for either something that they desire, (more land to conquer) or for defending their own country from someone else trying to take from what's theirs.
If a government doesn't have definite laws, the people may abuse the amount of freedom they have. The code of Hammurabi says that "what you do to someone, will happen to you too" (eye for an eye) kept the citizens in the area safe because they knew there would be serious consequences to what they might do to others.
