They helped the cities grow and allow them to ship there goods faste and to more places. number B
Most species begin its existence on Earth due to several environmental factors. These factors include the change of climate of one place. Most species which are already accustomed to their habitat adapt to their new environment when the change happens. When the species adapt, some modifications in their system are observed in their next generation. <span />
In the US federal tax system a proportional tax or flat tax, impacts low, middle and high-income earners equally. On the other hand, a progressive tax has more of a impact on higher-income individuals and businesses, so it is 'progressive' in a way that serves the progressive earners.
All the states didn't have the same amount of people so not everyone was being fairly represented in the bigger states that only had one vote for everyone who lived there