1 is correct.
I don't know about 2. Check your book.
1). How has Siberia's climate affected transportation in the region?
A: Siberia's climate has affected transportation as it made travel through the region was slow and dangerous.
2). What impact did the Trans-Siberian Railway have on Russia's population?
A: The Trans-Siberian Railway caused a great increase in Russia's population.
1 answer