How did the us relate to foreign countries under a us isolationist foreign policy

Isolationist policy, which was a policy followed by the U.S. government during the interwar period, meant that the United States refrained from active engagement in military conflicts. It served as an honest broker and sometimes provided indirect assistance as with Lend-Lease prior to 1941.

can you attach the graph and answer options (:

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.