Interstate Highway Act--this program put interstate highways under the control of the federal government. This would increase ease in and out of major cities.
St. Lawrence Seaway--this act in coordination with Canada widened the river and made it deeper for large ships to move along it to ease transport.
The source has a lot of detail, which can be very useful to historians who are trying to deeply research a topic. A historian trying to learn more about the trenches would find this very useful.
Probably B I'm not sure though
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be "the ability to tax the clergy", since this was not part of Roman life.</span></span>