Question

ultimately, the reforms initiated by mikhail gorbachev led to
the rise of vladimir putin.
increased hostilities with western europe.
the downfall of the soviet union.
improved relations with the soviet satellite states.

Explanation:

Mikhail Gorbachev's reforms (glasnost and perestroika) loosened controls across the Soviet Union and its bloc, destabilizing the Soviet system and directly contributing to the dissolution of the USSR in 1991. The other options are incorrect: Putin's rise came later in the 1990s, hostilities with Western Europe decreased, and satellite states moved to break away rather than have improved relations.

Answer:

the downfall of the Soviet Union.