Final answer:
A similarity between the Native American and American governments is the separation of powers in their governance structures. Tribal governments have branches like the U.S. government and have the ability to tax, legislate, and maintain judicial systems, while still retaining a degree of sovereignty.
Step-by-step explanation:
One similarity between the Native American government and the American government is their structure of governance, particularly the separation of powers within their systems. Many American Indian tribes have adopted constitutions that reflect the U.S. Constitution, which has led to the creation of branches of government similar to those found in U.S state and federal governments. This embodies the separation of powers principle, ensuring that no single branch has total control and allowing checks and balances between branches. Furthermore, tribal governments, like the U.S. government, have the power to tax, pass their own laws, and have their own judicial systems. Although Congress can pass laws that affect tribes, this structure gives tribes a certain level of sovereignty, comparable to the federal structure of governance within the broader American political context.