Answer:
Gas
Machine Guns
Trenches
Explanation:
ww1 was all about using mustard gas and it was popularized before being banned after ww1 and ww1 was the first introduction to full auto machine guns similar to LMGs nowdays and trenches were created to prevent getting shot, gassed or sprayed down by enemies
Maybe there were no cures, vaccines, or antibodies at the time. Medicine was never completely discovered for centuries to come, which is why the Black Plague occurred during the medieval/Middle Ages.
The correct answer is letter A
Unlike most presidents, Johnson has a distant background in the aristocracy. He owned a tailoring shop in the state of Tennessee, the "volunteering state".
In local debates, he defended the common man and attacked the plantation aristocracy. In the 1840s and 1850s, as a member of the House and Senate, he defended a bill to provide free land to the poor.
Johnson remained in the Senate even when Tennessee, along with the other southern states, joined the secession. The decision made him popular in the northern United States, as Johnson was showing himself to be in favor of the Union, not of the break-up of the United States.
The correct answer is - C. 1975 - 1999.
The period between 1975 and 1999 was a period in which the world population grew for around 2 billion people. Even thought that is the same rise as in the period between 1930 and 1975, still this period is shorter, and is just 24 years the world population grew from approximately 4 billion people to approximately 6 billion people.
