Chiến dịch Việt bắc thu-đông năm 1947 và chiến dịch Biên giới thu-đông năm 1950 có điểm tương đồng nào sau đây?

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.

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. the great plains       hop3 this yo

the puritans were a group of people who grew discontent in the church of england the common unity strengthened the community.