Complex sentence: The first law banning all marriage between whites and blacks was enacted in the colony of Virginia in 1691, and this example was followed by Maryland (in 1692) and several of the other Thirteen Colonies.
Split into simpler sentences: The first law banning all marriage between whites and blacks was enacted in the colony of Virginia in 1691. This example was followed by Maryland (in 1692) and several of the other Thirteen Colonies.