Final answer:
The first laws that attempted to preserve American wildlife were established in the 19th century, with significant early conservation efforts including the creation of Yellowstone National Park.
Step-by-step explanation:
The first laws passed that attempted to preserve American wildlife came into being in the 19th century. Notably, the establishment of Yellowstone National Park in 1872 marked a significant step towards conservation and protection of wildlife in the United States. Additionally, legislative efforts like the Lacey Act of 1900, which regulated the transport of illegally captured or prohibited animals across state lines, also demonstrate early attempts at wildlife conservation. These initial endeavors laid the groundwork for later, more comprehensive laws dedicated to environmental and wildlife protection.