Final answer:
False. Federalism is a system of government in which sovereignty is constitutionally divided between a central government and individual states, creating a federation. The supreme authority and lawmaking ability is not solely held by the federal government but is shared between the federal government and the states.
Step-by-step explanation:
Federalism is a system of government in which sovereignty is divided between a central, or national, government and individual regional political units, referred to as states. The power to govern is shared between the national and state governments, creating a federation.
This means that supreme authority and lawmaking ability are not solely held by the federal government but is divided between the federal government and the states. Therefore, the statement that federalism refers to the supreme authority and lawmaking ability of the federal government is false.