The correct answer should be the third one you listed. The "current drag" then is a device that is used in order to measure the sub-surface currents. This device and the measurements it provides are extremely important for the field of oceanography which studies the aspects of the oceans both the physical and the biological ones.
Spanish settlements in North America had one purpose only: to protect their shipments of gold and silver from competing European powers. The first successful settlement in North America, St. Augustine, Florida was built to protect Spanish fleets from attack by privateers. The statement above that the Spanish had "big cities. large farms" is patently incorrect.
It should be noted that the first successful rebellion in America; Pope's rebellion, also known as the Pueblo revolt, was the result of numerous failed promises on the part of the Spanish. Four hundred Spaniards were killed in the revolt and the Spanish lost control of New Mexico.
In an effort to prevent any alliances between the Cherokee Indians and the Mexicans, the Federal Government sent Sam Houston and John Forbes to the territories occupied by the Native Americans in order to negotiate the boundaries in which they could peacefully settle. These negotiations ended with a treaty on February 23, 1836. However, this document was rejected by the Senate because it considered the consultation had exceeded its powers by offering land grants to the Cherokees. Houston decided to disregard this and maintained the kept the treaty made with the Indians. However, President Mirabeau B. Lamar would ultimately agree with the Senate's interpretations and leave the treaty without effect.
The correct answer is the fourth one.
Hoovervilles were shantytowns which appeared during the great depression for unemployed people who were evicted from their homes.
The term "Hooverville" comes from the president in turn during this economic crisis Herbert Hoover, who was therefore widely blamed for it.
as the depression worsened, hundreds of thousands of people settled in hoovervilles, mainly at the skirts of big cities during the decade from 1930 to 1940
In 1932 president Hoover lost the election to Frankling Roosevelt whose new administration helped lift US out of the great depression. Hoovervilles were eventually torn down in the early 1940´s
