Most supplies for allied troops in North Africa had to be brought in by sea. According to the map, why would this have posed a problem?

What event brought the us into wwii? what conflicts happened after the us entered the war? i know the first part of this question, i need with the second part.

Legacy of the new deal is positive or negative

What was true about sharecropping? a. landowner provided free tools and seeds. b. workers could leave the land if they failed to make money. c. landowners often took advantage of workers. d. workers received ownership of the land they farmed after a set number of years.