Water, wood, and coal.
For 106 years the Chicago Stockyards was the main center of the meat packing industry. At its peak in 1924 it processed more meat than any other place in the world. Today the industry is decentralized.
Due to the booming industry of technology, which was the main source of immigrants deaths, thooousands of immigrants died.
The Agricultural Industry.
During the Industrial Revolution, coal, oil, and natural gas replaced wood as the main sources of fuel. Coal became the dominant fuel for steam engines and heating due to its abundance and higher energy content. Oil emerged as a crucial energy source for transportation and machinery, while natural gas began to be utilized for heating and lighting. This shift significantly contributed to industrial growth and urbanization.
Becase that was the main indstry before the factory system
The main fuel source for the work of the cell is the mitochondria.
The main fuel source for the work of the cell is the mitochondria.
The main fuel source for the work of the cell is the mitochondria.
coal was the main source at that time
industry
Industry
The main fuel source for the work of the cell is the mitochondria.
Petroleum is the main source of energy for transportation.
The main fuel source for the work of the cell is the mitochondria.
coal
Petroleum
Hydrogen is the main source and Helium second.