I think it should be because diplomats is the representative of a nation and negotiating with other nations could be more easier if we're already friendly with the diplomat. Also the way we treat their diplomat is also the way of how we treat the nation he/she representing and it would add a good standing in the global status if we are respecting the diplomats.
The Meiji Restoration in Japan laid the groundwork for massive economic development, industrialization, and the building of the great power that Japan would become in the 20th and 21st centuries. The Meiji Restoration led to the imposition of economic and development policies that allowed for the expansion and modernization of the Japanese economy allowing for enormous development.
The Battle of Lexington began on April 19, 1775 when Paul Revere arrived to Lexington, a town, and warned the minutemen there that "the British were coming". The British were ordered to arrest the rebels that did not want to pay the heavy taxes, but ended up becoming a war and eventually led to the American Revolution.
Hope this helps :
Jews believe that God appointed the Jews to be his chosen people in order to set an example of holiness and ethical behaviour to the world.
Answer:
to keep the balance between free states and save states