Which goal stated in the preamble to the u. s. constitution requires a strong army?

Asegment whose endpoints are points on the edge of the circle are whatps: i ment to put this under geometry i apologize ; ;

Which of the following statements best characterizes changes to agriculture in the united states since 1900? a. increased mechanization has reduced the need for labor.b. increased mechanization has increased the need for water, thereby increasing the need for labor.increased mechanization has increased the use of land, thereby increasing the need for labor.d. increased mechanization has increased food production, thereby increasing the need for labor. select the best answer from the choices provided.

What first caused people to consider that the continents were once one large landmass?