What is the main difference between primary and secondary sources? A. Primary sources are historical documents, and secondary sources are modern-day documents. B. Primary sources are derived from museums and archives, and secondary sources are created by history students and academics. C. Primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. D. Primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.

D. Primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.

Explanation:

Primary sources are the historical sources which are the main sources of this information and may be in the form of old diaries or printings while the secondary sources are derived after studying from the primary sources and making references to it by historians. The secondary sources may include books written on the subject by people.

This validates Primary sources being created during a particular historical era, and secondary sources being created by studying primary sources.

the industrial revolution pushed the world into modern industrialization. it changed the course of history profoundly. it caused rapid urbanization and pushed cities and countries into development. the industrial revolution began in great britain with a series with new inventions which led to the creation of machines and mass production.

this caused the country to gain wealth and money and become an international superpower. it improved transportation and manufacturing inside the country, pushed people to live in urban areas and britain to become the most powerful nation in the world for a while.

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.