Which occurred in the early 1800s

In the 1800s, the untied states fought in four wars. The war of 1812 was between the untied states and the great britian. This war ended 1815.

d) post-world war i

the exodus of these people from constantinople contributed to the revival of greek and roman studies, which led to the development of the renaissance in humanism and science. byzantine emigrants also brought to western europe the better preserved and accumulated knowledge of their own greek civilization