Which conclusion can be drawn from this graph?

a.
in 1910, more people living in the united states were born in great britain than in any other country.

b.
in 1910, more people living in the united states were born in sweden than in canada.

c.
about 1,615,000 people living in the united states in 1910 were born in ireland.

d.
the total population of the united states in 1910 was about 7,000,000 people.