Sven never paid attention to Maria,_____she had an affair with the milkman.
due to
because of
so

Sven divorced her_____the affair.
because
as a result
because of

_____Maria collected over $100,000 in the settlement.
Because
Consequently
This is why

After the settlement, Sven was left with nothing,_____he moved to a commune in Vermont to tend sheep and cattle.
so
because
that is why

_____his new lifestyle, Sven is a happier and more fulfilled person.
So
That is why
As a result of