Answer:
a) construction of tall buildings
Explanation:
Since the buildings during this time period were being built bigger and bigger there was more demand for elevators so people could get from floor to floor. Hope this helped :)
Answer:
The Niagara movement was established in 1905. It was led by civil rights leaders such as W.E.B. Du Bois and William Monroe Trotter. Their mission was to affect political and social change for African Americans. They sought to end institutional injustices and to expand economic and educational opportunities for Black Americans. The group's efforts led to the formation of the National Association for the Advancement of Colored People (NAACP) in 1909. Note that the language of the speech is representative of the time period in which it was delivered. Some words and phrases are no longer appropriate.
It's is a contraction of “it is” and Its with no apostrophe is the possessive word
For example
It's (it is) going to be a rainy day!
and
I tried to arrange my shoes wrong and i realized that’s not its box.