Capitalism takes a nation's economy to a new level by creating a large-scale, many-layered network of individuals dealing with <l:6,58>trade<e>. As the world is becoming smaller and better understood, those individuals - some of whom accumulate far more money than any merchants before them - discover that goods can be worth much more in a different location. Therefore <l:1,155>Caravans<e> appear, carrying goods from one city to another, making them more widely available for everyone and helping the merchants get much richer still. The richest ones may even make a move for political power, enacting an <l:7,15>Oligarchy<e>.