in 1923, which us president was the first to light up an outdoor national christmas tree with electric lights?

President Calvin Coolidge

Explanation:

The tradition of the National Christmas Tree on the Ellipse began with President Calvin Coolidge over 90 years ago when he lit a 48 foot Balsam Fir from Vermont decorated with 2,500 electric bulbs in red, white, and green on Christmas Eve 1923. Today, the tree lighting remains a beloved holiday event in Washington, DC.

hoped that helped

racism and segregation.

the correct answer is "c: merchants" and "e. soldiers".

the song dynasty was known as the first government in the world to introduce paper currency. it was also the first chinese government which established a permanent standing navy. finally, the first compass was introduced during this period of government.

all of these innovations heavily affected commerce in a positive way. printed money dynamize commerce within the borders of the empire due to an easier way to quantify value during the trade. the introduction of the compass trade routes to be faster. finally, the introduction of a standing navy regulate trade routes.

regarding military affairs, gunpowder was created during this period. this was a tremendous improvement that was widely utilized by the military in order to innovate in the manufacturing of weapons.