Western Europe's efforts to reduce air pollution include all of the following except O improving engine efficiency
o increasing transnationalism
O requiring catalytic converters
O using cleaner-burning fuels

improving engine efficiency

Explanation:

improving engine efficiency

the first action that caused many creek indians to turn against william mcintosh was when mcintosh a) supported the united states during the creek war of 1813–1814. b) attempted to stop the sale of creek land to the u.s. government. c) seized control of over 1,000 acres of land belonging to the creeks.

it allows shippers to carry commercial goods, which allows them to save time and money.