What contributions did the Europeans make to the North American colonies?

Aside from governmental systems and traditions, which
tended to mimic those of England, the contributions made by Europeans were immense-they
created the cash crop agricultural system, imposed European mores concerning property
ownership and diplomatic relations on natives, and fought large scale wars against each
other on American soil, to name a few massive
contributions.

We shouldn't downplay the impact of African
slaves, however, whose traditions, music, cuisine, and most importantly, labor helped
shaped the cultural landscape of the colonies, especially the South. Many slaves, after
all, were brought over precisely for their expertise in cultivating rice and other
crops. And of course, constant interaction with Native Americans helped shape the
governments and the societies of all of the colonies-how to deal with Indians, for
example, was at the heart of political disputes in Pennsylvania in the 1750s all the way
to the Revolution.