Which of these would be most useful in studying the effect of germs exchanges between the new and old worlds?

What river systems the worlds earliest known civilization develop ?

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.

In 1869, jay gould and james fisk’s actions caused a scandal in new york city. blank, the secretary of the treasury, informed the president about this scandal.