Kigali vs Boulder

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Kigali (Kinyarwanda: [ci.ɡɑ́.ɾi]) is the capital and largest city of Rwanda. It's near the country's geographical centre in a region of rolling hills, with a succession of valleys and ridges joined by steep slopes. The town has been Rwanda's economic, cultural, and transportation hub because it became the capital following independence from Belgian rule in 1962. In a place controlled by the Kingdom of Rwanda from the 17th century and then by the German Empire, the city was founded in 1908 when Richard Kandt, the colonial resident, chose the site for his headquarters, citing its central location, views and safety. Foreign merchants started to trade in the city during the German era, and Kandt opened some government-run schools for Tutsi Rwandan students. Belgium took control of Rwanda and Burundi during World War I, forming the mandate of Ruanda-Urundi. Kigali remained the seat of colonial administration for Rwanda but Ruanda-Urundi's capital was at Usumbura (currently Bujumbura) in Burundi and Kigali remained a small city with a population of just 6,000 at the time of independence. Kigali grew slowly during the next decades. It wasn't initially directly affected by the Rwandan Civil War between government forces and the rebel Rwandan Patriotic Front (RPF), which started in 1990.

However, in April 1994 Rwanda's president was killed when his aircraft was shot down near Kigali. Social tensions erupted from the genocide that followed, with Hutu extremists loyal to the interim government killing an estimated 500,000--1,000,000 Tutsi and moderate Hutu nationwide. The RPF resumed fighting, finishing a cease-fire of over a year. They slowly took control of most of the country and captured Kigali on 4 July 1994. Post-genocide Kigali has experienced rapid population growth, with much of the town rebuilt. The city of Kigali is one of the five provinces of Rwanda, with boundaries set in 2006. It's divided into three districts--Gasabo, Kicukiro, and Nyarugenge--which historically had management of significant areas of local governance. Reforms in January 2020 moved a lot of the districts' power into the city-wide council. The town also hosts the main residence and offices of the President of Rwanda and many government ministries. The largest contributor to Kigali's gross domestic product is the service industry, but a significant proportion of the population works in agriculture such as small subsistence farming. Attracting international visitors is a priority for city authorities, including leisure tourism, conventions and exhibitions.

Source: Wikipedia

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In geology, a boulder is a rock fragment with size greater than 256 millimetres (10.1 in) in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are usually just called rocks (American English) or stones (In British English a rock is larger than a boulder). The word boulder is short for boulder stone, from Middle English bulderston or Swedish bullersten.In places covered by ice sheets during Ice Ages, such as Scandinavia, northern North America, and Siberia, glacial erratics are common. Erratics are boulders picked up by ice sheets during their advance, and deposited when they melt.

They are called "erratic" because they typically are of a different rock type than the bedrock on which they are deposited. One of them is used as the pedestal of the Bronze Horseman in Saint Petersburg, Russia. Some noted rock formations involve giant boulders exposed by erosion, such as the Devil's Marbles in Australia's Northern Territory, the Horeke basalts in New Zealand, where an entire valley contains only boulders, and The Baths on the island of Virgin Gorda in the British Virgin Islands. Boulder-sized clasts are found in some sedimentary rocks, such as coarse conglomerate and boulder clay. The climbing of large boulders is called bouldering.

Source: Wikipedia