Part 1 - The difference between aids, treaty, and alliances. Aids mean that you get help from another country or you help them when it comes to supplies, treaty means an agreement you make between countries, and alliance is that a country is there to support you whenever it's needed.
Part 2 - The reason the United States of America is not included on this graph is because they had not yet declared war with Germany at that time period, The United States of America did get involved in the war but it was until April 6, 1917 when it started.
Part 2 - The reason the United States of America is not included on this graph is because they had not yet declared war with Germany at that time period, The United States of America did get involved in the war but it was until April 6, 1917 when it started.