Answer:
A russian revolution
Explanation:
Russia didnt lose ww1 they took alot of losses and backed out to start their communist revolution
In contrast to mechanical waves, electromagnetic waves can travel without a medium. This implies that electromagnetic waves can pass not only through solid objects like air and rock but also through empty space.
James Clerk Maxwell, a Scottish scientist, created a scientific theory to explain electromagnetic waves in the 1860s and 1870s. He realized that electromagnetic waves can be created when magnetic and electrical fields combine together. He compiled this electricity-magnetism relationship into what are now known as "Maxwell's Equations."
German physicist Heinrich Hertz used Maxwell's theories to explain how radio waves are transmitted and received. In honour of Heinrich Hertz, the hertz, or one cycle per second, is the unit of radio wave frequency. Two issues were resolved by his radio wave experiment. First, he had proven that the speed of radio waves was the same as the speed of light, which was something Maxwell had only theorized.
This demonstrated how radio waves are a type of light. Second, Hertz discovered how to create electromagnetic waves by causing the electric and magnetic fields to separate from wires.
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Answer:
Black history should be taught all year because the school system normally just teaches about black history, during black history month. Black history month happens every year in February. This month takes back on everything that has happened to people of the African american race. This month shows as a way of remembering important people and events in the history of the African diaspora.
The school system should teach about black history all year. Teaching about black history to children, and teenagers, will open their minds more about what has happened to the African american race throughout history. The first black history month started in 1976, by president Gerald Ford. He started this to show and tell people what happened to Black people. On that day President Ford said "honor the too-often neglected accomplishments of Black Americans in every area of endeavor throughout our history." He wanted people to be more open minded about what has happened to the African american race. This is why we need the school systems to teach about black history all year, so we can help expand awarness of what has happened in history.
Please give brainliest
A. city blocks laid out in a grid pattern.
C. a standardized system of weights and measures
The houses were built with stones and bricks, and some of the houses were multi-level, so B is not a feature of the ancient Indus cities.
Answer:
1. fRench and Indian war, Boston Massacre, battle if Lexington and Concord
2. (it doesnt say but the Boston Massacre is debatable depending on the person you talk to.)
3. for the Boston Massacre, a riot broke out and british troops tried calming things down but the people kept trying to harm the troops so it led to the troops shooting the crowd and killing and injuring a few people.
