Answer:
diaphragm,cervical cap,male condom, female condom, spermicide foam sponges and film.
Explanation:
unlike other methods of birth control, barrier methods are used only when you have sexual intercourse .
Religious and ethnical problems.
It was one of the largest empires of the world with many different ethnicities. The problem was to unite people under one rule.
Another problem was communication. It was hard to transfer knowledge and news to all parts of the empire because it was too large.
Assimilation was practiced by the Europeans against the Native Americans.
Explanation:
Cultural Assimilation is referred to as the process where small groups or culture form a dominant group. The cultural assimilation was an effort made by the Europeans to convert the culture of Native Americans into the culture of European- American in between 1790 and 1920.
United States also established boarding school for the Native American and the children had to attend the school. In case of cultural assimilation a person's language or a group of person's language and culture tries resemble with another group.
Answer:
false Metamorphic rocks can only form from pre-existing rocks. Metamorphic rocks only form as a result of metamorphism of igneous or sedimentary rocks. Rock melting to form magma defines the upper limit of metamorphic processes. The oldest rock exposed to Earth's surface is a metamorphic rock.
Explanation:
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