Why is there such a difference in the number of volcanoes at one type of boundary than the other?

What can you guys tell me aboutyellow journalism and the u.s. involvement in the spanish-american war.

What is the difference between the cultures of central asia and the caucasus region? the majority of people in central asia are muslim; the majority in the caucasus region are christian. the primary language in central asia is armenian; the primary language in the caucasus region is russian. central asia has been plagued by ethnic unrest; the caucasus region has had little ethnic conflict. the effects of soviet rule can still be seen in central asia; the caucasus region has developed its own identity since the fall of the ussr.

Where the main factor that enabled the growth of cities and civilizations was the existence of