When lewis and clark set out to explore the newly acquired Louisiana territory, they assembled a crew consisting of expert sailors, gunsmiths, carpenter, scouts, interpreters, and a cook. choose one of these experts describe why his or her contribution to the expedition was critical.

Interpreters

Explanation:

Interpreters were important because they helped the explorers communicate with the Native Americans. If they didn't have interpreters, there may have been misunderstandings and disagreements. Sacagawea is an example of a great interpreter who helped the explorers communicate and find shelter with different Native American tribes.

hope this helps :)

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).