Answer:
C. the united kingdom (Great Britain)
Explanation:
Hello!
During the nineteenth century, the British Empire expanded greatly in terms of size, population and wealth. By the end of the century—which has been termed 'Britain's Imperial century'—the Empire covered approximately one-quarter of the world's land surface and governed around one-fifth of its population.
Answer:
3
Explanation:
a large suburb of affordable houses
The hostage crisis in Iran took place over a period of 444 days, during which a group of Iranian students took 66 diplomats and citizens of the United States of America (USA) hostage. The crisis began on November 4, 1979 and lasted until January 20, 1981.
The crisis was described by the Western media as a "revenge and mutual incomprehension". In Iran, the taking of hostages was widely seen as a blow against the United States. In the United States, and in general the West see hostage-taking as an outrage on the part of the Islamist movement that violated the principle of international law on immunity and inviolability of diplomats and their embassies.
In 1980, the death of the Shah (July 27) and the invasion of Iran by Iraq in September made Iran more prone to the resolution of the hostage crisis. In the US, Carter lost in November 1980 the presidential re-election for the benefit of Ronald Reagan. Most analysts believe that Carter's mistakes in trying to solve the crisis played an important role in his defeat.
Surely only a few of us know that many modern high-school-level concepts in mathematics first were developed in Africa, as was the first method of counting. More than 35,000 years ago, Egyptians scripted textbooks about math that included division and multiplication of fractions and geometric formulas to calculate the area and volume of shapes (3). Distances and angles were calculated, algebraic equations were solved and mathematically based predictions were made of the size of floods of the Nile. The ancient Egyptians considered a circle to have 360 degrees and estimated Π at 3.16 (3).
Eight thousand years ago, people in present-day Zaire developed their own numeration system, as did Yoruba people in what is now Nigeria. The Yoruba system was based on units of 20 (instead of 10) and required an impressive amount of subtraction to identify different numbers. Scholars have lauded this system, as it required much abstract reasoning (4).
Astronomy
Several ancient African cultures birthed discoveries in astronomy. Many of these are foundations on which we still rely, and some were so advanced that their mode of discovery still cannot be understood. Egyptians charted the movement of the sun and constellations and the cycles of the moon. They divided the year into 12 parts and developed a yearlong calendar system containing 365 ¼ days (3). Clocks were made with moving water and sundial-like clocks were used (3).
A structure known as the African Stonehenge in present-day Kenya (constructed around 300 B.C.) was a remarkably accurate calendar (5). The Dogon people of Mali amassed a wealth of detailed astronomical observations (6). Many of their discoveries were so advanced that some modern scholars credit their discoveries instead to space aliens or unknown European travelers, even though the Dogon culture is steeped in ceremonial tradition centered on several space events. The Dogon knew of Saturn’s rings, Jupiter’s moons, the spiral structure of the Milky Way and the orbit of the Sirius star system. Hundreds of years ago, they plotted orbits in this system accurately through the year 1990 (6). They knew this system contained a primary star and a secondary star (now called Sirius B) of immense density and not visible to the naked eye.
Metallurgy and tools
Many advances in metallurgy and tool making were made across the entirety of ancient Africa. These include steam engines, metal chisels and saws, copper and iron tools and weapons, nails, glue, carbon steel and bronze weapons and art (2, 7).
Advances in Tanzania, Rwanda and Uganda between 1,500 and 2,000 years ago surpassed those of Europeans then and were astonishing to Europeans when they learned of them. Ancient Tanzanian furnaces could reach 1,800°C — 200 to 400°C warmer than those of the Romans (8).
The Spanish invasion of Chile and the majority of Latin America changed its history. The Spanish rule exploited the country during the mercantilist era. Independence came in 1844 and with it, economic and political stability.
Chile started to sell copper and nitrate, and copper is still the foundation of the Chilean economy. The beginning of the 20th century came with the economic crisis for Chile, the demand for mineral nitrates fell. The Great Depression did not help the country either.
Chilean economy got better with WWII with a higher demand for copper. The 70s were a difficult period for Chile, Pinochet was a brutal dictator, he widespread repression, torture and murder, it was only in the early 80s that democracy returned to the country, with it came free market system, many state-owned firms were sold, privatizations continued.
Today, with political stability, Chile is one of the fourty most developed countries in the world, with a robust economy.
