After its u-boats sank the lusitania in 1915, what did germany promise to do? stop fighting on the western front sign the treaty of brest-litovsk limit submarine warfare sink more passenger vessels

Explanation:

The submarine warfare sinked more.

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.

i think they came to washington to protest