What are the differences between the cash and carry and lend lease program?

The economy shifted from to industrial during the first industrial revolution

Which of the following was probably the most difficult challenge facing construction of the railroad?

This photo shows an early mesoamerican structure, specifically from the zapotec culture. what was this structure most likely used for? a. creating terraces for farm fieldsb. practicing religious ceremoniesc. playing a ball game with stone hoopsd. protecting a city from invading armies