Along which borders did the trench warfare stretch

The trench system on the Western Front in World War I—fixed from the winter of 1914 to the spring of 1918—eventually stretched from the North Sea coast of Belgium southward through France, with a bulge outwards to contain the much-contested Ypres salient.

Explanation:

the navigation act prevented the colonies from exporting to countries other than britain and it prevented the importation of goods by other countries as well. so i believe the correct answer is d. other nations could not deliver goods to the colonies.

hope this .

the growing interconnectedness of the world through communication, trade, and the exchange of ideas is an important theme in the history of the 20th and 21st centuries.

explanation: