Based on this excerpt President Johnson was concerned over which fundamental concept in the US Constitution The sovereignty of the States is the language of the Confederacy and not the language of the Constitution. The latter cains the
emphatie words. This constitution and the laws of the United States which shall be made in pursue thereof and all treaties
made or which shall be made under the authority of the United States, shall be the supreme law of the land and the jukes in
every State shall be bound thereby anything in the constitution of laws of any State to the corny withstanding
-Andrew Johnson State of the Union Address Dec 4, 1865
Isolationism
Separation of powers
Federalism
Checks & Balances
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a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

both eastern and western early north american cultures were known for building wigwams and longhouses.

wigwams, also called wetus, were small houses of 8-10 feet tall, made of wooden frames covered with woven mats and sheets that were used by algonquian indians. similarly,   longhouses were also used by algonquian and the iroquois tribes, and they were built as well with pole frames and elm bark covering. however, the main difference between wigwams and longhouses is that the latter was much larger than the former, with 200 feet long, 20 feet wide, and 20 feet high with inner raised platforms used for sleeping space.

what are the reasons