<human>:  How are World War 2 and World War 1 similar?
<bot>: Both World War 1 and World War 2 were global conflicts involving a large number of nations and alliances. 2 They both involved military actions that caused massive human suffering and loss of life. 3 Both wars were fought on multiple fronts, including the development of new technologies and strategies of warfare. 4 Both wars were hugely influential in changing the geopolitical landscape of the world.