I inherited money from my parent who died in Thailand. He was not a U.S. citizen or resident. Is this money taxable? Do I have to file any IRS form?

Accelerated cost recovery system (ACRS)

A statutory method of depreciation allowing accelerated rates for most types of property used in business and income-producing activities during the years 1981 through 1986. It has been superseded by the modified accelerated cost recovery system (MACRS) for assets placed in service after 1986.