What is significant about the year that vienna got the potato (1580)?

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?

Who founded the social contract theory of the government

Which describes a contribution from classical rome to modern western civilization? a. international gathering to celebrate sporting achievement b. written constitution based on natural rights c. large infrastructure projects to benefit the public d. direct election of the ruler by all residents of the empire