Complex sentence: Avalon Hill accepted the unfavorable settlement because Hasbro was already negotiating the acquisition of both Avalon Hill and MicroProse; less than one month after the settlement on August 1998, Avalon Hill was bought by Hasbro.
Split into simpler sentences: Avalon Hill accepted the unfavorable settlement because Hasbro was already negotiating the acquisition of both Avalon Hill and MicroProse. Less than one month after the settlement on August 1998, Avalon Hill was bought by Hasbro.