Probably to either to team up for a common goal or to oversee the trades in their area.
As it doubled the land area of the U.S., it also increased goods, services and wealth. Some advocates said that not only did the movement increase the size of the country, expanding to other countries and not just states, but it also added to farm lands needed to produce products and poultry.
Answer:
Great Britain entered World War I on 4 August 1914 when the king declared war after the expiration of an ultimatum to Germany. The official explanation focused on protecting Belgian neutrality; the main reason, however, was to prevent a French defeat that would have left Germany in control of Western Europe.
Explanation: