C. Winds are able to flow without obstruction.
Answer:
Each gained partial control of Persia economy
Explanation:
Persia (now Iran) is a country in south-west Asia. In the 19th century both Russia and Britain were keen to increase their influence over the Qajar dynasty in Persia. A revolution in December 1905 resulted in the introduction of modern reforms. Two years later Russia and Britain negotiated a new agreement with the Persian government. The Anglo-Russian Entente divided the country into sphere of interest, giving Britain economic control of the south and Russia the north. There was also a neutral zone in the centre that included Tehran. In 1909 the Anglo-Persian Oil Company (later BP) was founded and this helped to reinforce Britain's control over the southern part of Persia.
Eons and Eras. The first principal subdivision is called the eon. An eon, the largest division of the geologic time scale, spans hundreds to thousands of millions of years. Geologists generally agree that there are two major eons: the Precambrian eon and the Phanerozoic eon.
A slum is a squalid and overcrowded urban street or district inhabited by very poor people.