Answer:
Cause: Lewis and Clark's preparations for the expedition
Effect: They were able to establish diplomatic relations with many of the American Indian groups they encountered
The cause and effect relationship here is that Lewis and Clark's preparations helped them establish diplomatic relations with many of the American Indian groups they encountered. Some of the ways that their preparations helped them in this regard include:
They brought gifts for the tribes they would encounter, such as tools, weapons, and other items that were valuable to the Native Americans. This helped to establish goodwill and positive relations with the tribes.
They also brought interpreters and guides with them who were familiar with the languages and cultures of the tribes they would encounter. This helped them to communicate effectively with the tribes and understand their customs and practices.
Lewis and Clark also made an effort to learn about the tribes they would encounter before the expedition, by studying maps and other information about the tribes. This helped them to be better prepared for the interactions and negotiations that they would have with the tribes.
All these preparations helped Lewis and Clark to establish diplomatic relations with many of the American Indian groups they encountered, which allowed them to complete their expedition successfully and achieve their goals.
Step-by-step explanation: