Which describes one part of the columbian exchange? a. potatoes and tomatoes were introduced in the americas. b. people from africa were brought to the americas. c. horses and cattle went from the americas to europe. d. millions of asians died of disease.

What is one role of congress in determining the federal budget? a. voting on whether to approve proposed budgets b. announcing the budget to the country c. developing budget requests d. signing spending bills into law

It can be inferred that the dramatic increase in defense spending by germany was the result of. (a) attempts by great britain to take german colonies. ( b) fear of a two-front war against france and russia (c) the need to put down a communist rebellion (d) a competition with the allies to produce atomic weapons

What were 3 advantages to rail road growth