The convoy system, instituted in may 1917,
a. had failed by november 1917.
b. eliminated the sinking of allied ships.
c. ended the war.
d. cut merchant marine losses greatly.

d. cut merchant marine losses greatly.

Explanation:

In 1917, Germany unleashed an unrestricted submarine war around the waters of Europe, which would bring the United States into the war.

Allied losses totaled more than 2.7 million tons. Nevertheless, the effort was not enough to beat the allies who had adopted a more efficient train system against the U-Boot; With it, about 2 million US soldiers were transported to the front, as well as weapons and supplies from Europe.

design a political campaign for andrew jackson. include biographical facts about him as well as photographs. use the key words, “andrew jackson’s biography” to find out about him on the internet.include his education, military history, quotations from his speeches, and his views on the major issues with which he had to deal. be persuasive

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.