Answer:
Explanation: the reconstruction era?
i'll edit it just need to know if that's what your talking about
The positive effect of the industrial revolution was the new machinery invented including the steam engine, cotton gin, power loom, assembly line, telegraph, and multiple other inventions. This helped create things faster, and helped society do their jobs more efficiently.
The negative effects were the poor working conditions and living conditions. There was extremely low wages, and child labor. Pollution was also increased due to new machinery. Factories polluted the environment.
The correct answer is - D. how to make iron.
The Zhou dynasty was one of the greatest dynasties of China, and among many achievements of their reign, the artisans of this dynasty managed to learn how to make iron. This was revolutionary for the Chinese people, and it was of great use in the agriculture after the tools for it started to come in iron version, and it made everything much easier, quicker, and more efficient.
the war of 1812 when u.s. soldiers held up a huge american flag inspired francis scott key to write it. the sight of broad stripes and broad stars make him want to write the star spangled banner.
Military conquests by the Arab Empire and traders of Islamic faith were the primary means for spreading Islam to Africa, Europe, and Asia. I think its this one
