genesis:

• What were the circumstances that drove the people during that time to developed technologies towards inter-networks?
• How did the different technologies contribute to the evolution of the modern Internet?
• If you could change or improve something in the internet and/or its services, what would it be?

The USSR's launch of Sputnik drove the US to have technological advancement. Breakthrough such as that had to be overdone. Communication technologies (more specifically the US military)  at the time had found a curiosity that had to be quenched, how can their means of staying 'connected' or in sync as a network be tested to survive?
United States created the Advanced Reasearch Project Agency(ARPA). ARPA created the Information Processing Technology Office (IPTO) to address the concern and further the research of the (SAGE) program, which had networked country-wide radar systems together for the first time.
  As a first step interconnect their computers at the Pentagon, Cheyenne Mountain, and SAC HQ.

Not much on the specifics but it could be that what led to the development of inter networks can be donned on the competition for technological breakthroughs, the prized credit of innovation of one country over another, and the upgrading of present or already existing technologies (computers(softwares and hardwares) IMP, NCP, TCP, Packet Switching,   ) to much greater use, the advancement of communication and information technology.

 The internet has given the modern man immense abilities. From being able to access information easily at the click of a mouse or touch of the keypad, to allowing work done in great flexibility in time and location. If anything at all could be improved on the internet and its services, it would be that which we deem impossible now, perhaps like the ability to transmit a physical matter into the network and to let it materialize in a desired destination.  I could think of nothing to change on the internet,  except perhaps the  nullity of virus on it and its users. All in all, the internet has granted us what the men of old and ancient would deem as magical and mystic, to be able to commuinicate with people from miles across the earth? At a speed of a sneeze quite likely? Was impossible for them. What more could we possibly make of it?