and often--unfortunately for us--undesirable people were driven

to emigration, nearly all of whom came to English-speaking

territory, greatly increasing our productiveness and power. As,

we have seen, the jealousy of the Continental powers for one

another effectually prevented their extending their influence or

protectorates to other continents, which jealousy was

considerably aided by the small but destructive wars that did

take place. High taxes also made it more difficult for the