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Which of the following is an example of how the United States helped the Allied powers prior to joining the war?1. American ships provided naval escorts for British merchant vessels, as Britain and most other participating powers did not yet have their own official navies.2. Congress loosened immigration laws to allow a massive number of war refugees into the country who were crucial for the domestic war effort.3. American banks and the U.S. government offered loans and credits to the Allies that allowed the Allies to pay for purchases later but made it harder for Americans to remain neutral.4. American banks and businesses refused to do business with the Central Powers, as Wilson was adamant about declining to pursue economic benefits from the war.

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