B. Napoleon invaded Spain and Portugal - situation in Europe particularly in Spain provided an opportunity for Spain's overseas territories to fight for their independence. Napoleon's army occupied Spain and Portugal where he wanted to change a king which resulted into civil war.
India experiences varied climates ranging from tropical in the south to temperate and alpine in the Himalayan north. Snowfall is received by elevated areas during winters. India has Tropical monsoon type of climate. These varied climates occur due to vast area and latitudinal differences
Many Native Americans in the Great Lakes–St. Lawrence Lowlands planted various crops such as maize. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that you were looking for and the answer has come to your desired help.
The answer is density, temperature, and salinity. These are the factors that makes a current that is 50 meter less deep. The other choices will create a higher amplitude of the current.