Final answer:
To cancel a law in westward expansion means to revoke, abolish, nullify, or overturn it. This can occur through various methods such as the passage of a new law, a court decision, a voter referendum, or a governor's decree.
Step-by-step explanation:
To cancel a law in the context of westward expansion means to revoke, abolish, nullify, or overturn it.
When a law is canceled, it is no longer in effect and is considered invalid. This can occur through various methods such as the passage of a new law by the legislature, a decision by the Supreme Court, a voter referendum, or a governor's decree.
For example, during westward expansion, laws regarding land ownership and settlement were often canceled or amended to accommodate the changing circumstances.