50 points

the first half of the twentieth century saw an increase in the development of in the united states.
a. railways
b. roadways
c. airways

after world war ii, many major cities were linked to the suburbs by
a. airways
b. roadways
c. railways

first one is a

second one is B

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

d

step-by-step explanation:

look at the x and y axis