I’m not positive but I believe that it’s something to do with oil
Supreme Headquarters Allied Expeditionary Force (SHAEF; /ˈʃeɪf/ SHAYF) was the headquarters of the Commander of Allied forces in north west Europe, from late 1943 until the end of World War II. U.S. General Dwight D. Eisenhower was in command of SHAEF throughout its existence.
A strict policy of neutrality, the United States would not entangle itself with alliances with other nations.
Impressment of US soldiers
Answer:
the purpose of the voyage was to find a northwest passage to aisa, as well as to collect riches such as gold and spices along the way