The answer to your question is b
Marther Luther King Jr. was a leader of the Civil Rights movement that helped African Americans gain the same rights as whites in the U.S. Rosa Parks was an icon that inspired the Montgomery Bus Boycott which was part of the Civil Rights movement. No, I don’t believe it was difficult because a majority of people who road the buses were African American, there were many other ways to travel, and the cause that they were supporting by not riding the bus was worth being part of.
After a the war Panama was in Debt
Thus U.S.A bought it making it as it's own.
Therefore they made the canal as a short route to go between the small area between the nor
th and south.
The answer is carry-over effects
Explanation: Carry-Over Effects is an effect that "transports" from one experimental condition to another. Whenever subjects perform in more than one condition (which occurs in projects within the subject), there is the possibility of transition effects. For example, consider an experiment on the effect of presentation rate on memory.