Why did josiah strong write "the predominance of the angelo-saxon race"?

What issue lead from texas seceding from the union

Which answer best describes the u.s. national road? it ran from atlanta to baltimore and followed the railroad. it ran from new york to chicago and was made from wooden planks. it ran from massachusetts to ohio and ran parallel to the canal system. it ran from maryland to illinois and was made using macadam construction.

What man proposed a solution to the issue of slavery in the territories suggesting the idea of popular sovereignty