The united states created the marshall plan
(1947) as a program to
(1) develop an atomic bomb
(2) increase civil defense during the cold war
(3) provide economic aid to war-damaged europe
(4) deliver weapons to nationalist china

1. america's first national road morse 2. joined lake erie with the hudson river cooper 3. steam-driven locomotive erie canal 4. allowed businesspeople to keep in touch with trends cumberland 5. telegraph code fulton 6. clermont telegraph