What new weapons of mechanized warfare threatened those in combat?

Machine gun-modernized to be mounted tanks, airplanes, distribution of gas, zeppelins-gas filled air ships, observation balloons. Hoped this helped ( ͡° ͜ʖ ͡°)

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

d) a week

because the land run of 1889, although not without precedent in the history of the west, further, their men were aboard the first trains, ready to jump off and begin staking their claims. oklahoma city, edmond, and guthrie were all so affected.