I believe the correct answer is similar tools and remains. Based on the tools and remains that are rather similar in all of the Clovis sites, the archaeologists can see certain connections between the people who lived there many many years ago given that they used similar tools so they must have been connected somehow.
Any Republic or Country needs a Constitution which specifies rights of its people for a Govt is based on Rights & Freedom of its Citizens Govt is formed by the people to work for its people!!!
