Were president Reagan's defense spending increases in the 1980s the cause of the eventual collapse of the soviet union or was the collapse mostly due to other factors?

While President Reagan's defense spending increases in the 1980s contributed to the economic strain on the Soviet Union, the collapse was primarily due to a combination of internal factors, including economic stagnation, political corruption, and a lack of reform. Additionally, the policies of Soviet leader Mikhail Gorbachev, such as glasnost and perestroika, aimed at reforming the system, ultimately exposed its weaknesses. Therefore, while Reagan's military buildup played a role, it was not the sole cause of the Soviet Union's collapse.