At
the
end
of
the
19th
century
,
industrialisation
caused
a
____________________
____________________
.
After
1945
,
people
from
the
less
industrialised
countries
like
Spain
moved
to
the
____________________
____________________
like
France
,
Germany
or
Switzerland
.
Today
,
there
is
more
____________________
,
especially
from
Africa
,
Asia
and
South
America