I am not sure why you are getting down-voted but this is very legitimate question.
The role of government is to provide for the infrastructure a society needs to prosper. Roads are a primary part of that infrastructure. If I could see how fast and conveniently goods and people are moving within a country, state, I could tell you how developed it is. I believe this has always been true. The old nations which had better ways of moving goods also had great power to some extent.
Other parts of this basic infrastructure the government should provide include: a legal system, protection, education and healthcare. Perhaps beyond this the government can keep clear and let private markets handle.
The role of government is to provide for the infrastructure a society needs to prosper. Roads are a primary part of that infrastructure. If I could see how fast and conveniently goods and people are moving within a country, state, I could tell you how developed it is. I believe this has always been true. The old nations which had better ways of moving goods also had great power to some extent.
Other parts of this basic infrastructure the government should provide include: a legal system, protection, education and healthcare. Perhaps beyond this the government can keep clear and let private markets handle.