填空题

From the beginning, America, a nation of immigrants, welcomed people desiring freedom and a new start. However, the coming together of different races and ethnic groups created some (36)
Black people were the only" immigrants" who didn’t choose to come to America. For hundreds of years, Africans were taken from their homes to be slaves in the New World. The end of the Civil War (37) brought freedom to the slaves in 1865, but blacks still had a lower position in the society. The Civil Rights Movement in the 1950s and 1960s helped black people (38) many of the rights promised in the Constitution. In 1955, Rosa Parks (39) to give up her seat on a bus for a white man. Her courage (40) a bus boycott in Montgomery, Alabama, that ended (41) on city buses. Martin Luther King Jr. encouraged black people to use (42) means to achieve their goals of equal (43) . Finally, Congress passed the Civil Rights Act of 1964 to stop discrimination in all public places.
(44) . The laws have changed, but some people remain prejudiced. Tensions sometimes erupt in violence. (45) . Multicultural America has numerous minority groups that argue for equal treatment.
(46) . Minority groups now have equal opportunities in many areas of education, employment and housing. Interracial marriages are becoming more accepted. Children of different races, with their parents, are learning to play together and work together.