The Time Of Troubles was a main reason that the Romanovs were put on the throne.
”They ascended the throne at the end of one of the most critical periods of Russian history, known as the Time of Troubles” (PBS).
The Time Of Troubles was based upon the false Dmitriy (people who wanted to rule after the late monarch's death) with no stable leaders on the throne; this led to the plot between Sweden, Poland against Boyar that led the country into turmoil when it came to the monarchy.