One type of structure facilitated by reinforced concrete is the , a projecting form supported at only one end. The American architect Frank Lloyd Wright made poetic use if the in one of his greatest works, the Edgar J. Kaufmann House, popularly known as Fallingwater.

answer; i believe the two groups were irish immigrants and chinese immigrants;

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.

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.