What event had the immediate effect of causing germany to declare war on the allies

b.

jim crow laws were enacted in northern states.

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.

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

when people started to question traditional christian beliefs, they became criminals in the eyes of the church: they were accused of heresy and then, executed. the church held unbelievable power and anyone who tried to defy it or its beliefs, was demonized and persecuted.

mark brainliest and have a stunning day!