Question

which led to the 1905 revolution?
○ the events in st. petersburg
○ the strike by millions of workers
○ the establishment of the duma
○ the indifference of the tsar

Explanation:

The 1905 Russian Revolution was triggered by the events in St. Petersburg (Bloody Sunday), where peaceful demonstrators were shot at, sparking widespread unrest. The strike by millions of workers was a result of the unrest, the Duma was established after the revolution, and the tsar's indifference was part of the broader context but the immediate trigger was the St. Petersburg events.

Answer:

A. the events in St. Petersburg