Problem: Background: Junius Richard Jayewardene (Sinhalese: juniys ricdd jyvrdhn,Tamil: juunnniys ricctt jyvrtnnnaa; 17 September 1906 - 1 November 1996), commonly abbreviated in Sri Lanka as J. R., was the leader of Sri Lanka from 1977 to 1989, serving as Prime Minister from 1977 to 1978 and as the second President of Sri Lanka from 1978 till 1989. He was a leader of the nationalist movement in Ceylon (now Sri Lanka) who served in a variety of cabinet positions in the decades following independence.
Context: On the economic front, Jayewardene's legacy was decisive. For thirty years after independence, Sri Lanka had struggled in vain with slow growth and high unemployment. Since Jayewardene's reforms, the island has maintained healthy growth despite the civil war.  On the ethnic question, Jayewardene's legacy is bitterly divisive. When he took office, ethnic tensions were present but the country as a whole was at peace. By the end of his tenure, Sri Lanka was facing not one but two civil wars, both featuring unprecedented levels of violence and brutality.  Though Jayewardene indeed did not take measures to stop the attack on Tamils, he was not opposed to them personally, only politically. One of his most esteemed friends was a supreme court judge of Tamil ethnicity, a member of an elite family and raised in Colombo, but who was strongly linked to his Jaffna Tamil heritage. This is but one close Tamil friend of the president's, and it is quite clear that he was not a racist but rather a man who knew how to exploit racism to win the majority.  Highly respected in Japan for his call for peace and reconciliation with post-war Japan at the Peace Conference in San Francisco in 1951, a statue of Jayewardene was erected at the Kamakura Temple in the Kanagawa Prefecture in Japan in his honor. In 1988, the J.R Jayewardene Centre was established by the J.R Jayewardene Centre Act No. 77 of 1988 by Parliament at the childhood home of J. R. Jayewardene Dharmapala Mawatha, Colombo. It serves as archive for J.R Jayewardene's personal library and papers as well as papers, records from the Presidential Secretariat and gifts he received in his tenure as President.
Question: What were his reforms?
Answer: On the economic front, Jayewardene's legacy was decisive.

Problem: Background: Plains Indians, Interior Plains Indians or Indigenous people of the Great Plains and Canadian Prairies are the Native American tribes and First Nation band governments who have traditionally lived on the greater Interior Plains (i.e. the Great Plains and the Canadian Prairies) in North America. Their historic nomadic culture and development of equestrian culture and resistance to domination by the government and military forces of Canada and the United States have made the Plains Indian culture groups an archetype in literature and art for American Indians everywhere. Plains Indians are usually divided into two broad classifications which overlap to some degree. The first group became a fully nomadic horse culture during the 18th and 19th centuries, following the vast herds of buffalo, although some tribes occasionally engaged in agriculture.
Context: The earliest Spanish explorers in the 16th century did not find the Plains Indians especially warlike. The Wichita in Kansas and Oklahoma lived in dispersed settlements with no defensive works. The Spanish initially had friendly contacts with the Apache (Querechos) in the Texas Panhandle.  Three factors led to a growing importance of warfare in Plains Indian culture. First, was the Spanish colonization of New Mexico which stimulated raids and counter-raids by Spaniards and Indians for goods and slaves. Second, was the contact of the Indians with French fur traders which increased rivalry among Indian tribes to control trade and trade routes. Third, was the acquisition of the horse and the greater mobility it afforded the Plains Indians. What evolved among the Plains Indians from the 17th to the late 19th century was warfare as both a means of livelihood and a sport.  The Plains Indians raided each other, the Spanish colonies, and, increasingly, the encroaching frontier of the Anglos for horses, and other property. They acquired guns and other European goods primarily by trade. Their principal trading products were buffalo hides and beaver pelts.  Although they could be tenacious in defense, Plains Indians warriors took the offensive mostly for material gain and individual prestige. The highest military honors were for "counting coup"--touching a live enemy. Battles between Indians often consisted of opposing warriors demonstrating their bravery rather than attempting to achieve concrete military objectives. The emphasis was on ambush and hit and run actions rather than closing with an enemy. Success was often counted by the number of horses or property obtained in the raid. Casualties were usually light. "Indians consider it foolhardiness to make an attack where it is certain some of them will be killed."  Due to their mobility, endurance, horsemanship, and knowledge of the vast plains that were their domain, the Plains Indians were often victors in their battles against the U.S. army in the American era from 1803 to about 1890. However, although Indians won many battles, they could not undertake lengthy campaigns. Indian armies could only be assembled for brief periods of time as warriors also had to hunt for food for their families. The exception to that was raids into Mexico by the Comanche and their allies in which the raiders often subsisted for months off the riches of Mexican haciendas and settlements. The basic weapon of the Indian warrior was the short, stout bow, designed for use on horseback and deadly, but only at short range. Guns were usually in short supply and ammunition scarce for Native warriors.
Question: Who did the plains indians have battles with
Answer:
Three factors led to a growing importance of warfare in Plains Indian culture. First, was the Spanish colonization of New Mexico