PLEASE HELP M PLSSSEEE A political effect of the Lewis and Clark Expedition was the

founding of St. Louis as a gateway to the West.

expansion of the nation east of the Mississippi.

beginning of trade with American Indian tribes in the West.

building of large cities in the Pacific Northwest.

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.

pennsylvania, new hampshire, massachusetts, connecticut and rhode island .